Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6e0173f7eab3b7…

MALICIOUS

PDF

70.9 KB Created: 2021-02-08 19:15:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 76c979d968ca6bfaced3133e9e805537 SHA-1: 6451126750f3c7a4727460d0c9ab576714873a0d SHA-256: 2c6e0173f7eab3b752087237125215f785b8f8fa82f55b7eb453c4e2a63fcb2e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, indicative of a link farm designed to attract traffic or distribute malware. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are sufficient to infer a malicious download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wb?keyword=non-%20authoritative%20answer%20l%C3%A0%20g%C3%AC PDF link annotation
    • https://cdn.sqhk.co/nufopusifa/ggdiggc/download_game_bmx_boy_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/Ljitihk/86091229830.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/fIhgcjh/anime_doll_maker_games_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/djhHZhh/road_rage_video_game_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/keragipiki/Nhehfme/iowa_aea_online_login.pdfIn PDF document text
    • https://bomovote.weebly.com/uploads/1/3/5/3/135398027/6842bc492f39087.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/piradi/nibazatorip.pdfIn PDF document text
    • http://zifawikixeliba.epizy.com/90751494107.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/cisco_3750_x_firmware.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/bhagwan_ki_photo_mp4.pdfIn PDF document text
    • http://zikepodaw.epizy.com/ronotekuwiduve.pdfIn PDF document text
    • http://rarezutawuwelam.epizy.com/international_migrant_stock_report_2019.pdfIn PDF document text
    • http://rumajajoneder.rf.gd/icds_9_borrowing_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/arabic_style_english_font_for_android.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FF 5388 bytes
SHA-256: ce864042f6633c77386cffc999940631aac8667657564a16f464b319bc3fec51
font_01_sfnt_off0000e8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DB 10888 bytes
SHA-256: 80eb08a88aa2cd1ba415ba3ada29766f68fa779798534fb13637a6c5f4b4073e

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