Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68bc4be7b0f408a…

MALICIOUS

PDF

89.4 KB Created: 2021-07-29 21:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: fca95f9af1533c05553d8cdc398d7274 SHA-1: 185e156e6aa655a034b357f53abf031171961cff SHA-256: b68bc4be7b0f408a3bfc00a47db25241543391cdd9926bb1871c70ff06e3072e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content or downloads. The presence of a 'download button' heuristic further supports the phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tamilrockers+2020+telugu+movies+download+in+tamil PDF link annotation
    • http://jmvlpslimited.com/ci/userfiles/files/tiviwaxivekad.pdfIn PDF document text
    • http://cosmik-kino.ru/sadm_files/30319056209.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/15021210072.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/dc8f76210a2c8a094711d683e6dc2a0e/degidilixirikododetel.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082912b1eea9---63440472478.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a97e126168---dubupakar.pdfIn PDF document text
    • http://harrisonsfamilyreunion.com/clients/62911/File/madufigopinu.pdfIn PDF document text
    • http://poledance-chrudim.cz/files/file/bijisenatepejojizodoso.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd2537e7d0---wusogot.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/matuzosorakagigax.pdfIn PDF document text
    • http://smartvoicecom.com/userfiles/pixonevugukatulip.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/5ecf8e63d394d539f53cde47ade2b200/rigowenas.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/kibuvumuv.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6ce768653c1096c2e7c320638a5a0b3e/valoxup.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/e5cc62124411f01c6bca69ad3dd78805/donuse.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///ridepume.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/ee888ed0210611944d8643d3397283e6/juzerovadebolazevaded.pdfIn PDF document text
    • https://lavaecucebrescia.it/file/4051266693.pdfIn PDF document text
    • https://ooobelkom.ru/ckfinder/userfiles/files/54040150943.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/f126aea771049197879f669ece4c6eed/28665614975.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/1d9a73d88d2c6af141d67329be3353ab/12501881840.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_off0000f91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11136 11264 bytes
SHA-256: 15fd46b737343bc7d75e25d90ca795f5ff64327811504dee9e88790ff41fd4c2
font_02_sfnt_off00012b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B8A 16988 bytes
SHA-256: 67870c5f86c152146f382ba865906703816c50006209b21754dac678b3b4d68b

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