Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e88aed2a8a3e23…

MALICIOUS

PDF

90.5 KB Created: 2021-06-27 14:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1d7c4e45ddf42449a5575e5eaf73f937 SHA-1: 305200e8e63e52c0dd600a8a9c2356220626a264 SHA-256: 17e88aed2a8a3e236e483d7ace8fa6b605e4099ca1d0ca0d3bbfed3d7cf99892
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to distribute malware or phish users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to this tactic, and the presence of embedded URLs further supports the attack pattern of directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://queure.ru/uplcv?utm_term=free+foxit+pdf+reader+download PDF link annotation
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160c62d3dcc9e4---12844314898.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3da634d27---badinadufuwoxunudigimo.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/pinakebufodejevutaz.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/lakaxanosufovixane.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ed560593f---8558353179.pdfIn PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/bigunojukelowumugonipavu.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/kc35s4dbml7mfnar42cs98q6pr/bejokafidaniji.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/fefe0c8b32b9dc0b0cea6a1ada1e5574/38328691848.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebb722b932---wotik.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160793b548d97f---zekimitovemubozo.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c879e08719---6710004353.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/88e00ca1584eaacdd044da2b167a2ced/tikero.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924d9c689a7---fikarobogabenolakuxesuk.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c86c1f683b4---bosabopomasev.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/wonimunupibev.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/41276869772.pdfIn PDF document text
    • https://malashealthcare.com/userfiles/files/98516431159.pdfIn PDF document text
    • http://aimic.com/userfiles/file/59906245855.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f53b181b45---wirogotikabifojapoxudokun.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/r78nokbrs4qqt72vm3lhesfhbb/80777664168.pdfIn PDF document text
    • http://ciskmv.com/css/file/lajipag.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/46651522222.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/04bc93f4460f537fe47f21a221757657/bikojebukevov.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/10050967144.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/e79d14267499dd4c3e4a3f4d7c535da1/80251983406.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8hfccuidrparv5oi68hkv66nu3/63242917642.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a40b52b14c---81170544623.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAD 17852 bytes
SHA-256: f17d405509a4dbcf8c27523dc5547e10b9d977061ee3a1ed37c46168c3fe09b4
font_01_sfnt_off00012ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000142f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142F8 10488 bytes
SHA-256: caa08df0ab9aa45ca64faa34358c38f723662b9c0f448c2dec6b973371c6c0fa

Open this report in the interactive analyzer, or submit your own file for analysis.