Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e95676bee9e21e…

MALICIOUS

PDF

79.8 KB Created: 2021-06-08 20:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 422fd63d84835e44ac907113d66ee4c5 SHA-1: cfac84155c052992be502b6c74d8c37de5aade14 SHA-256: 94e95676bee9e21e3a832a19931f09fa2ef3580a58b635bd9b3083b50e8ceecc
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm with numerous external URLs, many hosted on disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded links and the document's structure point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://smidgel.ru/pbw?utm_term=my+hero+heroes+rising+watch+online PDF link annotation
    • https://sanepawoja.weebly.com/uploads/1/3/4/5/134579143/3110448.pdfIn PDF document text
    • https://guwevene.weebly.com/uploads/1/3/1/4/131437413/buxupulaxexa.pdfIn PDF document text
    • https://guvoladedesu.weebly.com/uploads/1/3/1/4/131453897/c101cd290b.pdfIn PDF document text
    • https://xisaluzesa.weebly.com/uploads/1/3/4/6/134602292/jarodo_zewevuro.pdfIn PDF document text
    • https://lakukuvirukum.weebly.com/uploads/1/3/0/8/130874631/8883294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479675/normal_6063b3e287e61.pdfIn PDF document text
    • https://wufodiwefoveve.weebly.com/uploads/1/3/4/8/134891768/6c91da471d88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_6042ffbc48006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490949/normal_6066cbb44a0e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365589/normal_5ff8fb4046653.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392867/normal_6002f0446083e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368467/normal_602df666b4c5b.pdfIn PDF document text
    • https://sepuzemafunud.weebly.com/uploads/1/3/4/5/134584668/basapuzabowusovasuka.pdfIn PDF document text
    • https://malugeko.weebly.com/uploads/1/3/1/6/131636988/guwuluteru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419413/normal_5ffd89975876f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451756/normal_5fff60609ae39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409797/normal_5fd36a997b878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_606b2fd6217ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9831271e-fba7-4fd8-8e54-2cbb2f01bf24/skywalker_trampoline_double_basketball_hoop_for_12_trampolines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62033dfb-7952-486c-bca1-229a286dae9c/kogexamutefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6418e55-30c4-49f3-b35d-e2cde723649c/torozafiregaxinogajebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8930fae5-2017-43b4-9ec0-c56ec3c52a60/49418026559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd8a31d-83d7-4f04-8dee-8d8a896c443c/short_stories_for.kids_malayalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac63ac5-8360-4cb5-a12e-3b414cbe07c0/comentarios_biblicos_john_macarthur_romanos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afc26f4c-1867-4506-a5f6-eb68fcfc7263/how_to_become_an_intercessor.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_off0000f959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF959 5260 bytes
SHA-256: 6f6a292dd902a18f5a99dbc604fdfd4dc5b7c7b3293c6382c451b2ab8250d913
font_01_sfnt_off00010b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B58 11508 bytes
SHA-256: 3854d19a7f3008c845eb9637714a39484e053a7beec988363509df4942c2271f

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