Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60e28a742da5e5c…

MALICIOUS

PDF

89.7 KB Created: 2021-03-24 06:30:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 851eac46a151424ece3d57954dad690d SHA-1: c1b8bbf9c89ab260daadc4271036744e4def1434 SHA-256: c60e28a742da5e5c08f4127628c0930b4b84c45d5d2a9518a5837eb62f37236d
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 0.9997

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://fokemale.ru/strik?utm_term=employment+diversity+statement+samples+for+job+application PDF link annotation
    • https://cdn.sqhk.co/liguvikozo/i0hgu0N/hitman_sniper_2_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gizivapejoko/hGjaXic/49013070553.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/eliSjhh/99245990066.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/hbihpgg/go_kart_racing_las_vegas_strip.pdfIn PDF document text
    • https://nipixajivoru.weebly.com/uploads/1/3/1/4/131436983/3369358.pdfIn PDF document text
    • https://pepulumowuso.weebly.com/uploads/1/3/2/6/132681954/def6e.pdfIn PDF document text
    • https://cdn.sqhk.co/wixikinotu/gZgfib2/my_little_princess_castle_1._13_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410727/normal_6006bd630ac18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443608/normal_5ffcd47ea5dc3.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/SAS9icP/z_nation_cast_season_5_episode_9.pdfIn PDF document text
    • https://cdn.sqhk.co/kisoxukapab/hlppGjc/line_free_calls_messages_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_600fb9183885b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d6c658b4-eb6b-4a8f-9d15-b5349d7399fc/67820625913.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/client_onboarding_process_flow_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c25d0f8-f0e9-43c3-964d-b7d5af12aadc/a_levels_chemistry_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/zipotib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f87f5b8e-4b51-42fc-9730-59f2698ba1bc/gallows_of_madness_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/microsoft_checksur._exe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49549405-78ad-4243-bf1b-20f285822f79/batman_death_in_the_family_movie_interactive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f983540-13e0-4921-852b-2ba7a195742e/clearstream_2v_tv_antenna_60_mile_range.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 5424 bytes
SHA-256: 0694b221f17d2305dfc267bc651b78cfb610ce0a4c85e505d78518d1f14f2cef
font_01_sfnt_off0001210e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1210E 11564 bytes
SHA-256: 42d7a140d876f87999df0be8cfb559d4b2232ece86a3ca0e7f39d5ffbc65a4e7
font_02_sfnt_off00014862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14862 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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