Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe2992964e8d293…

MALICIOUS

PDF

65.1 KB Created: 2021-04-02 12:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 002cdb43a99cd94d0778ef386eb62bb5 SHA-1: 89a7ad70e31b4427b00df22c109ddfabd6d4b015 SHA-256: 9fe2992964e8d2931f6f90abc9b9aa74496d707861e09b1ff4735cfd36499095
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm, containing a large number of external links to potentially malicious or SEO-manipulated content. The ML classifier and ClamAV also identified it as malicious. The embedded URLs suggest an attempt to redirect users to other sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9587

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://lozipotod.ru/award?keyword=pembebanan+cantilever+adalah+pdf PDF link annotation
    • http://vozobatenaw.mywebcommunity.org/wakekapuke.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/idbhhSH/ramesuwowelopajafixoje.pdfIn PDF document text
    • https://cdn.sqhk.co/toriwogadej/hc7Pwjh/pujiful.pdfIn PDF document text
    • http://xozukasel.iblogger.org/b_pharmacy_colleges_in_maharashtra.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/84822935887.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/gvWPFsJ/monument_valley_game_free_download.pdfIn PDF document text
    • http://zinuxuf.22web.org/jasper_report_java._lang._nullpointerexception.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/iicYSge/22581623837.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a8a70d16-e3f0-4805-b115-4d8c62c40b57.filesusr.com/ugd/82e28d_4626f7de13b64307a80fc56707a3d0b9.pdf?index=trueIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_0af25581650b4232ac689eb57f4578d8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/afac1eb1-6ef0-4e64-9e2f-0ef6dd28faf3/bifocal_safety_glasses_menards.pdfIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_3a837c181a34412e88f13808c97e805c.pdf?index=trueIn PDF document text
    • http://xutenujute.myartsonline.com/xanesoruzejifik.pdfIn PDF document text
    • http://nejatunopux.epizy.com/21021098068.pdfIn PDF document text
    • https://2f8a6ab9-e864-4757-b083-6627a13f4c48.filesusr.com/ugd/405339_7827ae45932f48259676adcdd86bde35.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce3ef070-d109-4a07-82c9-1810722bfe68/the_5_elements_of_effective_thinking_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a97b863d-33bf-485b-a6df-008e4ca2e72a/still_i_rise_maya_angelou_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e651545d-ffa4-4eef-b9af-0a3964b7ceee/sonamegarideb.pdfIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_99c6820978964a21b581c7ab5ff29eb9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/eec30352-3789-410c-a451-e2108376ca6b/74626054244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69985df1-d8f6-4016-861a-0a28d0ce21af/what_happened_at_the_end_of_mistresses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e86e31d3-6b0d-42f2-aaec-b8ac0d2f5336/cannon_36_gun_safe_-_tractor_supply_reviews.pdfIn PDF document text
    • http://nuxumejaxumem.epizy.com/digestive_system_ppt_free.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC4 5416 bytes
SHA-256: 578b511faaec980c0e3adfaf382a9099e6d4e64be626cec3aa7744c910bfed21
font_01_sfnt_off0000e004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE004 10400 bytes
SHA-256: a3a256f539c00fa394384f58eb832952b90cb7dba9e32c57b764de7b595a9efb

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