Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d864a06d812103…

MALICIOUS

PDF

87.6 KB Created: 2021-03-17 06:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4f1c81cc6e7137785544a47ae487785d SHA-1: e4f39decd7db8d3e1281b1292ac8a2390df6b6e0 SHA-256: 47d864a06d81210365b0e918aa365d52db3924e3b6a688a69ecbf6546c722dc1
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 0.9989

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://leonvi.ru/wix?keyword=ji+young+choi+iowa+state PDF link annotation
    • https://cdn.sqhk.co/tasokuxu/zboiage/51589987838.pdfIn PDF document text
    • http://stat-index-co.com/what_is_project_rosegl5zv.pdfIn PDF document text
    • http://sellforce.ru/how_to_control_lg_blu_ray_player_without_remotefyc78.pdfIn PDF document text
    • http://copyright-help-center.com/19199855010xk5le.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/westpoint_home_electric_blankets.pdfIn PDF document text
    • http://superheatbelt.xyz/904282864578eohm.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/a4fc62.pdfIn PDF document text
    • https://cdn.sqhk.co/jexozumumanu/PifWThd/79826530203.pdfIn PDF document text
    • https://pawasisuleti.weebly.com/uploads/1/3/4/6/134652657/ludujujofenis_valomaf.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/d30266ee.pdfIn PDF document text
    • https://cdn.sqhk.co/zosurinipin/hggIiZh/62852388850.pdfIn PDF document text
    • http://aires.fun/workplace_health_safety_and_welfare_regulations_1992178ze.pdfIn PDF document text
    • https://cdn.sqhk.co/rafumufo/usbhfhh/61677539750.pdfIn PDF document text
    • http://alexandreablog.com/873228183194639w.pdfIn PDF document text
    • https://nituzizuzij.weebly.com/uploads/1/3/6/0/136091047/wegox_vifuril_juzizalividitum_javuveti.pdfIn PDF document text
    • http://findattime.com/how_much_do_disney_store_paydd1g8.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/sorokib.pdfIn PDF document text
    • https://cdn.sqhk.co/nojebimit/g9igNIK/bobaloca_bubble_tea_and_coffee_house.pdfIn PDF document text
    • http://circleshtang.xyz/ruzakulibatotajatayb42.pdfIn PDF document text
    • http://wordsideget.top/prentice_hall_algebra_2_online_textbookaqa0c.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/rodigapigeta/85875687553.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/muxavibuwukotuvonatuloko.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/50714766187.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/movie_love_quotes_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/11212764556.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C19 5000 bytes
SHA-256: 3761d1ac0f083184fc00fddbb6a1a2f1f9073b63199b677d2895f36d823462dd
font_01_sfnt_off00011d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2B 11116 bytes
SHA-256: 9aae8c2edc10d0194c38baaca9f66edf2e7de42c1b381766080ccf660fde39a9
font_02_sfnt_off000142ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142EE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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