Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce75b0f324b2a00…

MALICIOUS

PDF

79.0 KB Created: 2021-04-05 23:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 41822afe503a8de770825b1388639e6d SHA-1: 1de81ce569a14a46eb4eceb1e42c5a156ae75b81 SHA-256: 4ce75b0f324b2a007555978b23a58379656421a5d19002bda24224f9f525be45
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 0.9998

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://dugedepap.ru/123?utm_term=blue+planet+2+sheet+music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480170/normal_6053163324d8b.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/application_for_employment_sample.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480749/normal_6025d16c321c5.pdfIn PDF document text
    • http://napufokotipo.getenjoyment.net/50146688824.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458635/normal_6005759edf902.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/iieKQgg/short_ride_in_a_fast_machine_score.pdfIn PDF document text
    • http://zajiledafalam.getenjoyment.net/81710573653.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/de7jdja/arabic_word_samad_meaning_in_english.pdfIn PDF document text
    • http://fafizaso.iblogger.org/line_rangers_treasure_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/ibjfjh1/bupomufizogal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_6021fdf9728b5.pdfIn PDF document text
    • http://nebatomefov.scienceontheweb.net/sujixedotevipemewafiz.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/syntactic_structures.pdfIn PDF document text
    • http://fimewovoko.getenjoyment.net/dalowosujolimimo.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
    • http://tavoxelelenasi.onlinewebshop.net/53202736151.pdfIn PDF document text
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_0a975cd9624d403589d11bde59523858.pdf?index=trueIn PDF document text
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_be763e05481a4096ae40eee63c818adc.pdf?index=trueIn PDF document text
    • http://depexezopip.epizy.com/world_stock_market_live_graph.pdfIn PDF document text
    • https://5b3fc17b-a4fb-4144-9a53-ff617e35bc6a.filesusr.com/ugd/696117_2ffadb3ac27a48f6a95510c9940b68e6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB97 5032 bytes
SHA-256: 2454afd3c3291b42acd4b5ebcb7d2b8c5fa741b325a7638046bc05b557b5916a
font_01_sfnt_off0000fc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC88 10672 bytes
SHA-256: 381deb52ec91abaef07145131c4e28fe14a5b6304bb598b51d3ffc9f3cc349e0
font_02_sfnt_off000120e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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