Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b608703c3ecef9…

MALICIOUS

PDF

77.1 KB Created: 2021-04-03 11:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7cf3b03a2657dfa15e9a3a4ee13cfbc2 SHA-1: 51649d508c5faf9d3938f9486d1fbf94ac45633a SHA-256: 75b608703c3ecef909ef3113f47cad02155539d91bdc38b23cbc6a3e73848c91
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9995

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://gimoguvi.ru/wix?keyword=jpoint+red+dot+battery+replacement PDF link annotation
    • https://cdn.sqhk.co/xewimoziwuvo/ibhe6gd/41217927090.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/iEicejb/play_tennis_competitively_in_french.pdfIn PDF document text
    • https://zenalebib.weebly.com/uploads/1/3/5/9/135966912/4ebcc714925.pdfIn PDF document text
    • http://relodifalixogo.scienceontheweb.net/67320871250.pdfIn PDF document text
    • http://disadijemedox.22web.org/android_studio_tutorial_step_by_step.pdfIn PDF document text
    • http://kanurapubefuxo.iblogger.org/root_checker_pro_cracked_apk.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/968195.pdfIn PDF document text
    • http://vegifeda.mypressonline.com/98388278746.pdfIn PDF document text
    • https://bazeliwelari.weebly.com/uploads/1/3/1/8/131857734/4272e39b.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/hjjfAgg/armoured_squad_mechs_vs_robots_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pezefaxovojole.atwebpages.com/business_card_design_templates.pdfIn PDF document text
    • http://tujotabupogi.rf.gd/ruzenufuzemofetikize.pdfIn PDF document text
    • http://wevovodoneto.epizy.com/fimupogofamu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/zoguditis.pdfIn PDF document text
    • http://rijejonusax.rf.gd/34926186147.pdfIn PDF document text
    • http://remigesej.epizy.com/78698277304.pdfIn PDF document text
    • http://vipuzala.myartsonline.com/zegoxolidukubuxuvosuju.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/41272162280.pdfIn PDF document text
    • http://kugefosames.rf.gd/chahat_blood_money_video_song_free.pdfIn PDF document text
    • http://bamonoxo.onlinewebshop.net/vebibom.pdfIn PDF document text
    • http://fijopuk.rf.gd/oxford_discover_1_teacher_s_book_download.pdfIn PDF document text
    • http://resexam.epizy.com/may_cause_miracles_meditation_day_1.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF7 5272 bytes
SHA-256: 54c2cd0c3a0fb3b004b799e31af1fda980ec250ec78ed4ee62ce464b864648ed
font_01_sfnt_off000100d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D5 10580 bytes
SHA-256: cbdeebd4774b862ce7e7e74d5b9cf076143ce536114343c96f04ba692028ce7e

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