Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bf52746d7aae9b…

MALICIOUS

PDF

69.7 KB Created: 2021-03-19 17:47:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 63b054346a2e65f26edff65e4c0d8134 SHA-1: 972ef6fecd497815ccdfc4140979d84e4b50d9a8 SHA-256: 47bf52746d7aae9b5b315021b90116f425a22a93711327bf66b47c8b0f2f55bc
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • 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://crophysi.ru/123?utm_term=united+nation+human+development+index+report+2012 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481667/normal_602b45a51cd67.pdfIn PDF document text
    • http://delayikapy.xyz/74807366872wnzpq.pdfIn PDF document text
    • https://fipamexi.weebly.com/uploads/1/3/1/4/131407823/togiguf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375073/normal_600636eacd7dd.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/8628de61e17.pdfIn PDF document text
    • https://fijoxivivuf.weebly.com/uploads/1/3/4/0/134041864/maxoduga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_5fd7ae9b4225e.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/pesabozuj_sobajezovebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409096/normal_601b0eecac5f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481999/normal_602115cd0ee13.pdfIn PDF document text
    • https://mejonozawus.weebly.com/uploads/1/3/4/0/134016798/8131234.pdfIn PDF document text
    • http://natlegend.space/imdb_girlfriends_guide_to_divorce_coachmsru8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wulagisi/stratasys_polyjet_materials_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/80743992300.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/82215233157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c94b28-f4db-4084-a20f-1c4b2d2d30e3/what_does_lige_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c835cf1-d359-4659-8c4f-370fc87496fd/war_horse_trailer_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/mafia_2_xbox_360_achievements_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/cbse_school_affiliation_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/watch_pure_flix_movies_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47e62f63-d0be-489f-9b91-596a1614ff21/osi_model_application_layer_functions.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/cockney_songs_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/22320665082.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/duzakabuvewejibarilupuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/autophagosome_formation_review.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50B 5468 bytes
SHA-256: fc3e4fb9a22f11b83694f3c0903f151d9ec252fb65c88397e253379c93858fb4
font_01_sfnt_off0000e786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE786 9700 bytes
SHA-256: 2597914d5657dd531fb21368fade3625670f16728d98ebadaf747e647525f474

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