Malicious PDF — malware analysis report

Static analysis result for SHA-256 a217cea9e3219445…

MALICIOUS

PDF

76.3 KB Created: 2021-03-15 21:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ed33d375d9fc96f4c1b6973b94fce994 SHA-1: 84f8930d72fd5468e67e86d556d0e6ed001aa70e SHA-256: a217cea9e3219445bc622fd2fa999584899cc902bc659a2239c6e8b25f721984
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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=beware+of+dog+sign+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388158/normal_5fe29ff49e821.pdfIn PDF document text
    • https://varowuzogan.weebly.com/uploads/1/3/1/8/131856285/513626.pdfIn PDF document text
    • http://springital.fun/16085408531t6g84.pdfIn PDF document text
    • http://keepxufi.space/sexotegovapas61qwl.pdfIn PDF document text
    • http://izzzaaa.space/how_to_get_a_replacement_ebt_card_in_nydypfy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450354/normal_604ad88ac1622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457881/normal_604d3191f3629.pdfIn PDF document text
    • http://timecodes.net/bouncy_ball_with_no_borax17v26.pdfIn PDF document text
    • https://poxanopa.weebly.com/uploads/1/3/4/3/134380657/674019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381532/normal_5feb73b32f590.pdfIn PDF document text
    • http://mydenverneighborhoods.com/darling_all_telugu_songs6ro93.pdfIn PDF document text
    • https://dazomutatif.weebly.com/uploads/1/3/4/7/134729749/3294330.pdfIn PDF document text
    • https://poxefapujo.weebly.com/uploads/1/3/5/3/135312596/cc4331.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446502/normal_5fddcf2806bfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_35f8a3af0d0942ada6c793471adcf31c.pdf?index=trueIn PDF document text
    • https://c36efdde-2309-4ce2-a10d-b6df2ce12cd8.filesusr.com/ugd/e98059_bbbc301f2a49444aa5dc13b3f373a25c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/61fd1c45-78c4-48a0-90bd-1f78727c1320/38490837658.pdfIn PDF document text
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_4f5dda391b844361a660d7bfa92151dd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b52e3f2e-ba97-4c3f-b04b-0e5ad1b69663/28850612916.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/samosubivepigovowifezuri.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/media_exposure_effects.pdfIn PDF document text
    • https://b634734f-67aa-4edc-9b69-dcf7610e4690.filesusr.com/ugd/c86859_0b7f3660a3ca42adb99cf321c7d6f63e.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_off0000eaac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAC 5320 bytes
SHA-256: 677cae0fd4305aacd052f6ed1a25c9e32b37464e9136611fd82d3bfed776b28a
font_01_sfnt_off0000fcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF1 10824 bytes
SHA-256: 3d7ac3200fc8266b419e02da9301069f6318a2c5e53c4bb01312a4832bea65a7

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