Malicious PDF — malware analysis report

Static analysis result for SHA-256 75de14053fd968e6…

MALICIOUS

PDF

82.5 KB Created: 2021-09-02 13:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e1c042508008ea7d0308992b151cc8a1 SHA-1: c275dafb95ced5d0965c18d9508ec50ce3963a80 SHA-256: 75de14053fd968e63d3c8b982428a018a361a67986d685fd822aac6f70c92a6e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious. It functions as a link farm, containing numerous URLs that point to external sites, some of which are hosted on compromised WordPress uploads or disposable domains. The presence of these links suggests an attempt to manipulate search engine rankings or direct users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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 http://bscartridge.com/pic/sisivexudigatuxexiz.pdf In PDF document text
    • http://kozszemle.hu/uploads/files/gotekunufatemumu.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/renifefekafodevig.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a229856dc81---35525439057.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e6f485f87f---xurukatenowopelabutamef.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/46746527649.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3e2636735---simixax.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aff64084ad9---vedijakob.pdfIn PDF document text
    • https://icoachyou.biz/images/ckeditor/files/83362897587.pdfIn PDF document text
    • http://wirheiraten.de/images/file/93372210044.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/9182bc21a21299b9eb7f3031b8062e56/lijozenepilesakusi.pdfIn PDF document text
    • http://mcutech.net/upload/2021/07/file/16252824551044835927.pdfIn PDF document text
    • http://gzky.cn/dubeite/ckfinder/userfiles/files/20210824_123108.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/89346597280.pdfIn PDF document text
    • http://maysoi.com/hinhanh_fckeditor/file/12094267838.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/87cca429675f7aa865d37a3fa6fdccaa/wagidalubomilisufejiwaf.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/88418172239.pdfIn PDF document text
    • https://avenue102.com/uploads/file/93604654477.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/4782c8a50edc2ca1580a03ad81e86471/93511620505.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/21704367064.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/aed715dfec4f9d9deac17ac0dafd55a0/66709033887.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/72415717595.pdfIn PDF document text
    • http://gandolfiarchitetti.com/userfiles/files/fexoxa.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/6mjf69vtgitgh5its30lktfm92/tenibelibo.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/13472231282.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/88420113016.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=lean+6+sigma+black+belt+pdfPDF link annotation
    • 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_off0000dc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0D 17896 bytes
SHA-256: 274d60959d5f5f51225c535304f373bd59094fedd3973a4d8a1931e864f3dcb1
font_01_sfnt_off00010ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122D8 11100 bytes
SHA-256: fd4d9113804c7db23264865c0ab3e7b70c1b5cfb1334ca64b51698400964e020

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