Malicious PDF — malware analysis report

Static analysis result for SHA-256 d180a8db667da3a2…

MALICIOUS

PDF

78.0 KB Created: 2021-02-24 07:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8650f495820661448f4eea07492fcd18 SHA-1: 4fa9e6b282ec6ab413435cdacd4fa6fa839f0bbd SHA-256: d180a8db667da3a240601aec6819107528a253390b9e1cdc775cc14c14a6b401
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to domains that appear to be part of a link farm, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to game and software downloads, aligning with common social engineering lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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
  • 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://jottigo.ru/strik?utm_term=guess+brand+logos+level+238 PDF link annotation
    • http://4kuhd.me/sound_blaster_equalizer_windows_10gjqd7.pdfIn PDF document text
    • http://forecast.bet/fojelikupomidigerotip04e0c.pdfIn PDF document text
    • http://bhd-management.space/speak_with_distinction_downloadailys.pdfIn PDF document text
    • http://limons.space/257196167625qpdw.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/w4UN5ii/jelewasivi.pdfIn PDF document text
    • http://rentline.pro/sipiwapetarufuraxz3rpv.pdfIn PDF document text
    • http://samyog.ru/algebra_1_graphing_inequalities_worksheet_answersfw8qv.pdfIn PDF document text
    • https://cdn.sqhk.co/jeposanop/hiehfrl/tactic_master_strategy_battle_tower_defense.pdfIn PDF document text
    • http://logmeinnow.xyz/bilajexakidug774dh.pdfIn PDF document text
    • http://devgm.design/92601532328sijd4.pdfIn PDF document text
    • http://kind-insta.site/ziferuraboxagowaladomicy7hd.pdfIn PDF document text
    • http://vitalia-transports.com/wuzeriz12uv0.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/geo_flex_11._6_review2roi8.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/advanced_calisthenicsxrt38.pdfIn PDF document text
    • http://ellmax-site.xyz/the_heirs_2013_hd8lv68.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://s3.amazonaws.com/voxulija/2772487772.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/55059510414.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/printable_punctuation_worksheets_for_grade_3.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BF 2952 bytes
SHA-256: d8b907802410e675ceca2784509e58a9dae2947c1b2ad43e3e0c02687eabed47
font_01_sfnt_off0000e44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44D 5468 bytes
SHA-256: 9760444dee48b7f8e666dc9f68fadc6c844ae706231be68ea4688efd531b3d7d
font_02_sfnt_off0000f6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E5 11016 bytes
SHA-256: 7ddf1af40d0f3ba98c954580bd0971aca8728e95bb9908dce12268090e2641ea
font_03_sfnt_off00011c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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