Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2efb508797974fe…

MALICIOUS

PDF

76.7 KB Created: 2021-03-29 15:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c7ce56207a94dce95dcebc4534fb851f SHA-1: 8ad55f2bdf4db041b443541d2265df703c309014 SHA-256: e2efb508797974fea9ed8704312961fd3ef752ec6adacd61c07c149ef1c5163e
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 0.9996

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://xezojetit.ru/wix?keyword=bullies+ben+shapiro+pdf PDF link annotation
    • http://grenkasalo4.xyz/advantages_of_capitalist_economyfpyph.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/95877778296ybz77.pdfIn PDF document text
    • http://fegiroxopirez.sportsontheweb.net/laliwe.pdfIn PDF document text
    • http://tizadejaso.getenjoyment.net/tcs_service_agreement_filled_sample_2020.pdfIn PDF document text
    • http://rijexofugovu.medianewsonline.com/what_is_chase_bank_address_for_wire_transfer.pdfIn PDF document text
    • http://erse.xyz/maxomulezowozufokometodofbic7.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/zigukovena.pdfIn PDF document text
    • http://kushtanash.ru/how_to_use_an_oil_filled_heater9ib2f.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/amplified_bible_download.pdfIn PDF document text
    • http://dokukuke.mypressonline.com/indian_stock_market_real_time_charts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sefowolo.atwebpages.com/rugogelaruse.pdfIn PDF document text
    • http://lunupesefobe.rf.gd/hitachi_c12fdh_stand.pdfIn PDF document text
    • https://006b50d4-ad2a-4261-8279-34542eb0d7b0.filesusr.com/ugd/a640e9_9c68f8ff1c0c4401b005b337a2b1fc15.pdf?index=trueIn PDF document text
    • http://toxuwer.epizy.com/97390402792.pdfIn PDF document text
    • https://331e17ce-4321-42a7-89aa-067eaa3daeeb.filesusr.com/ugd/6576ad_1a4fde7c0d004cc2b4f05d52b4e54082.pdf?index=trueIn PDF document text
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_198f4a40915b4b72ba1a73ee82d4da87.pdf?index=trueIn PDF document text
    • http://tawojijil.rf.gd/cast_of_eva_luna.pdfIn PDF document text
    • http://xemugapot.rf.gd/career_options_after_12th_science_pcm.pdfIn PDF document text
    • https://8f0c9b82-9570-4081-bbb7-5e23a534ea09.filesusr.com/ugd/7008f3_0e3c237069f5441b860323646242101b.pdf?index=trueIn PDF document text
    • http://fakomufe.epizy.com/88958673884.pdfIn PDF document text
    • http://joxumokuri.epizy.com/jugisusedat.pdfIn PDF document text
    • https://e8802323-0824-40c5-8a58-19d700e27586.filesusr.com/ugd/50cafd_8688fd2000d848e4bb26935e69f4241e.pdf?index=trueIn 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_off0000ed0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0C 5316 bytes
SHA-256: 15267777a2bac971e0970410869ff88f4d7f746fb063f2911a6b8d329f737a44
font_01_sfnt_off0000ff13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF13 10888 bytes
SHA-256: 4059c9d1608989d34da1d6cf11ac45579199c6fd7a0336541e8f46f9019accec

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