Malicious PDF — malware analysis report

Static analysis result for SHA-256 360184120c060113…

MALICIOUS

PDF

75.8 KB Created: 2021-03-29 18:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 035ee8eb9ff541f04660ab266b49ff58 SHA-1: 0a0803380ca450a78b5b4458c52b4d7ad1fcd3e8 SHA-256: 360184120c06011391629351681c6bacbb950f342b5345730dce9f7d6553bbb7
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, including a link farm heuristic, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier strongly indicate malicious content, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/award?keyword=anthony+burgess+shakespeare+pdf PDF link annotation
    • https://cdn.sqhk.co/lonuxonemor/eYlihRi/23603022687.pdfIn PDF document text
    • https://cdn.sqhk.co/sowodopevew/zzgiljd/stickman_fight_2_player_games_apk.pdfIn PDF document text
    • http://igbusinessabouthelp.com/557724188212q3qv.pdfIn PDF document text
    • http://opssmall.space/head_first_design_patterns_c_github9gwlz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490736/normal_5feb887b9900a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387411/normal_603af74dce264.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/eidwli9/16625282011.pdfIn PDF document text
    • http://newyearshop.site/gadozexugoduvodifigikokfyiwo.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/42177907557m3ztc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458849/normal_5ff1fe3bc0aaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404503/normal_5fd045e897268.pdfIn PDF document text
    • http://7lessons.site/575519028912alqk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461249/normal_60396b083204c.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/hjbQrOE/ar_drone_wifi_not_connecting.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/tolivajupeku/93444929207.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/how_to_adjust_liftmaster_p3_garage_door_opener.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/ios_notification_bar_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc04ea5e-6b95-4c8e-8c85-c10b077de3d2/kazumakiw.pdfIn PDF document text
    • https://b0b8c8c5-0de0-49ea-8337-0a56b8a4e65f.filesusr.com/ugd/bf9dfc_c4ce5ae79cc248fbbd00a7dd86ecc5fa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c86d7421-4b26-4393-bf18-1e5a858935c8/software_testing_course_training_in_bangalore.pdfIn PDF document text
    • https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_0ddf6b9bfdd24efcb43b4810bb37e8d2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisiku/chemistry_form_4_chapter_8_short_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/high_performance_cluster_computing_architectures_and_systems.pdfIn PDF document text
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_036442a8cc72418890b67800f797a0d8.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AF 5564 bytes
SHA-256: 8329d02d9f36b254b02126e8bd16d3b1f8d1432537e1f7c991068f969e83b405
font_01_sfnt_off0000faa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA3 11156 bytes
SHA-256: 240c0e1ea37722902b9af782ee67ae9db069821828528b0f928b0578401bbe4e

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