Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9659b2d0a1294c…

MALICIOUS

PDF

97.2 KB Created: 2021-03-06 11:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0c4fb5c94b8ddc1c4876037f313da830 SHA-1: 192f33a2deb00370d498d4c34a4e61036d33b125 SHA-256: 7c9659b2d0a1294cdeeb6ee8283fdb4e7bfec4ede77b1a2cb2037b74984d676c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/award?keyword=bergey%2527s+manual+reference In PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/hia2Eig/ultimate_ninja_blazing_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nexokefad/gggdxja/steel_pulse_true_democracy_album_cover.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/gehaTHz/zegepibojam.pdfIn PDF document text
    • https://cdn.sqhk.co/xamizine/iociche/71959426423.pdfIn PDF document text
    • http://boxoxele.22web.org/10345678305.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/qr9Phga/zopebedef.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/ihewges/happy_digging_idle_miner_tycoon.pdfIn PDF document text
    • https://cdn.sqhk.co/tisezalave/eigxVbD/59171407092.pdfIn PDF document text
    • https://cdn.sqhk.co/geruvijiwiw/z9rqgeU/women_s_soccer_manager_wsm_football_management_system.pdfIn PDF document text
    • https://cdn.sqhk.co/falugojafat/jejjgju/v_live_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/0jaihjb/17718410543.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/TEib42n/guide_for_zooba_zoo_battle_arena_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/idqiiU3/97726378285.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/kruhgYT/56914186480.pdfIn PDF document text
    • https://cdn.sqhk.co/ramawuvade/Ncjcd5t/smith_s_marketplace_thanksgiving_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/Piaiilw/jetojonosijije.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/blhcKjd/42229409702.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/hedgiif/sega_pocket_club_manager_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/P3hfxjj/bovelonamaze.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/zamuriza/akinator_vip_apk_6._2.pdfIn PDF document text
    • http://likitikovewepit.rf.gd/59878608457.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/19780260122.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_off000131ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131EA 5032 bytes
SHA-256: 7d13dac389dd076ace218fbf27c2c9bfe82192ffac0ea0756a1a49c1ae5805b6
font_01_sfnt_off000142f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142F7 11764 bytes
SHA-256: b289d7e5c86d2b9f387b1f46a1c0580cf351c9597711eac31020f5feabd52434
font_02_sfnt_off00016931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16931 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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