Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00f0502b6b68ea5…

MALICIOUS

PDF

66.3 KB Created: 2021-03-01 18:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6c15256f4a75512f331289888eacbc5a SHA-1: 20b156b2e241c51f643cdca6eb9db729a8bc5223 SHA-256: a00f0502b6b68ea5251856e8701da18ef5adf46208ee67e34c83038da1e1b552
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://pelibifir.ru/wix?keyword=manual+contour+roam+2 PDF link annotation
    • http://gagivukamuw.getenjoyment.net/how_to_use_proctor_silex_10_cup_coffee_maker.pdfIn PDF document text
    • https://wavikifetin.weebly.com/uploads/1/3/4/9/134901048/volixedixezozugewiz.pdfIn PDF document text
    • http://italysummer.fun/technical_drawing_basicsn7wtm.pdfIn PDF document text
    • http://tryraisins.club/kirkland_signature_spiral_ham_glaze_instructionsqr6hp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_5fd37c914eaed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402960/normal_602c3ec45c993.pdfIn PDF document text
    • http://sexedate69.site/renewable_and_efficient_electric_power_systems_solution_manualraf9j.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/which_event_prompted_us_intervention_in_latin_america_during_the_cold_war_era.pdfIn PDF document text
    • https://rakonudiboxenej.weebly.com/uploads/1/3/4/8/134874851/faditid_fodajel.pdfIn PDF document text
    • http://famexukox.22web.org/46950277005.pdfIn PDF document text
    • http://mon-cmbretagne.com/73850679218pwc9j.pdfIn PDF document text
    • http://my-favshopc.online/adivina_el_animal_juego_para_niosojo4u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/splatoon_2_bamboozler_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/anarkali_full_movie_free.pdfIn PDF document text
    • http://gevogorusitaw.epizy.com/nigik.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/58511847913.pdfIn PDF document text
    • http://bejutamukedus.epizy.com/how_would_you_define_bacterial_transformation.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/unsuccessful_interview_feedback_email_template.pdfIn PDF document text
    • http://duzavito.epizy.com/consecutive_integers_worksheet.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_off0000caa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA6 4904 bytes
SHA-256: 5e2f9ea905e18ea85932e37829689f7bfd025ec1ad20b73c9266cea796d1a548
font_01_sfnt_off0000db47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB47 9712 bytes
SHA-256: d53bbc71df50d28cdcc4f0c0dfbb25a4332d6276c16e7a918163b01f4a7c67c9

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