Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac007e1fb03cabe…

MALICIOUS

PDF

72.7 KB Created: 2021-03-22 03:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 343e41771cf35ed0505ebdf7baa0d97c SHA-1: 9a52179ac1a0d55c1d4825539bad4390b3c9af77 SHA-256: 0ac007e1fb03cabe3c830633628e48fa53633f41a05246ca8403ed95d35fb764
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9991

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/strik?utm_term=how+to+set+timer+ge+oven PDF link annotation
    • https://cdn.sqhk.co/pibusupi/jdHdhfa/wink_news_live_app.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/Jjhgdgj/90139066991.pdfIn PDF document text
    • http://it50off.pro/182971270677qhcn.pdfIn PDF document text
    • https://cdn.sqhk.co/neratimo/gjyZSgj/sabbath_school_lesson_review_youtube_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_5fd129cda65ab.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/iihwhjI/lighthouse_church_of_god_ketchikan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_60446b0b731a4.pdfIn PDF document text
    • http://sportita.fun/93526294390waole.pdfIn PDF document text
    • http://dvigatel.guru/presentation_of_intangible_assets_on_balance_sheetgmzza.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/gdQlzid/8645500229.pdfIn PDF document text
    • http://rujajabejeveto.66ghz.com/bose_companion_5_speakers_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386618/normal_601dea17719b9.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/bKIojdS/world_commodity_prices_definition_economics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5ff414c344792.pdfIn PDF document text
    • https://cdn.sqhk.co/jenexovu/jc5cjgH/device_care_app_telstra.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/gcJM9ja/foosball_cup_world.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_1b06d60b3c104ad6bdcaad03831f5371.pdf?index=trueIn PDF document text
    • https://176fe727-baa2-4f6f-8ab0-cddcd97ecb74.filesusr.com/ugd/45df28_f9cb354d8f8d48698258c46c096b5ee2.pdf?index=trueIn PDF document text
    • http://zezegakaj.rf.gd/11315994610.pdfIn PDF document text
    • http://fowudunomus.epizy.com/pazalokixosegud.pdfIn PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_2b3654e0aa8b415d9578a55f6e6f86f9.pdf?index=trueIn PDF document text
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_ee2e7e67ad4a40a98447759d3d83e913.pdf?index=trueIn PDF document text
    • http://piludid.epizy.com/the_lightning_thief_musical_original_cast.pdfIn PDF document text
    • http://lazevemu.epizy.com/bofiz.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_off0000e137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE137 4876 bytes
SHA-256: 94a6ecd3b2719beb5e4c9f573a78b3734167e1afd586874bfda16472edc6f26d
font_01_sfnt_off0000f1ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CE 10464 bytes
SHA-256: c4531367879c9521cdfd6bba51674dad784854ee536c40bf53ada422ec1876d6

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