Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0b511dc903b16d…

MALICIOUS

PDF

80.2 KB Created: 2021-03-21 06:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a544401ab10eeea9839285fdf594905e SHA-1: b23a657fcf4489e55a58f432f4723166164538d1 SHA-256: 1e0b511dc903b16dfa238c3ae5f016aee16851f3f368b1a3cecb9404c693f98b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9967

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://baarspo.ru/123?utm_term=hogan+test+questions+and+answers PDF link annotation
    • http://wirelessinfo.ru/40701425056gv8on.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_60161b3921157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_5fe8b5be87685.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/bWBh10e/ludo_king_multiplayer_board_game_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5fd241669008b.pdfIn PDF document text
    • http://daddytestit.xyz/598399031231660p.pdfIn PDF document text
    • http://golesaluwo.66ghz.com/2603631052.pdfIn PDF document text
    • http://2220202.ru/me_before_you_original_motion_picture_soundtrack_download6ax5h.pdfIn PDF document text
    • http://ruseseru.iblogger.org/49942598636.pdfIn PDF document text
    • https://cdn.sqhk.co/pidagasew/Pnhbvq6/35355908248.pdfIn PDF document text
    • https://cdn.sqhk.co/sodovokak/geijJii/crossings_church_las_vegas_live.pdfIn PDF document text
    • http://priz24.site/black_and_decker_edger_manualvls1n.pdfIn PDF document text
    • https://motovonesavot.weebly.com/uploads/1/3/4/6/134690882/8080648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416500/normal_603000b52e051.pdfIn PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/kanagivififeve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_60450e8e77f63.pdfIn PDF document text
    • https://cdn.sqhk.co/rizavoxaje/jeiibgg/graphic_design_portfolio_websites_examples.pdfIn PDF document text
    • http://smartradiobf.ru/58463477852acdqe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://komivarutu.epizy.com/bravos_xl_dryer_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/diy_hydroponics_systems_builder_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/tra_c_o_form_ak.pdfIn PDF document text
    • http://xadaguxo.rf.gd/articulaciones_sinartrosis.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/suweloxixek.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/81447689771.pdfIn PDF document text
    • http://jexiduro.rf.gd/85260317889.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/kufepilejiwawomikes.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_off0000faf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF7 5140 bytes
SHA-256: de1863cc76d8943d5e51f1f65c20ee5bea2257468eefe510b5831a778020ca94
font_01_sfnt_off00010c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8A 11296 bytes
SHA-256: 5ce3887e338fd740a3027833cfa5737e85d69c8ddec01ff80e1072185f32a8a1

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