Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5fca5948e27512e…

MALICIOUS

PDF

122.9 KB Created: 2021-03-25 14:49:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 39d76cfbc5177916b76b838c2ad9b704 SHA-1: 50f9f0835f3fabd50ced552c30f364e5e45bcf3e SHA-256: d5fca5948e27512e90077974300f0af4b8c4d270e2c89be251754f33beefdd70
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 0.9993

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://midufefew.ru/award?keyword=arch%25C3%25A9ologie+du+savoir+michel+foucault+pdf PDF link annotation
    • http://brumbum2.xyz/domino_s_free_pizza_clubikfp1.pdfIn PDF document text
    • http://sufulilutidake.mypressonline.com/taresojofesigekereruxosor.pdfIn PDF document text
    • http://vk-settings-change.online/best_crossfit_app_freecpuxt.pdfIn PDF document text
    • http://virona.org/secrets_of_jewish_wealth_revealedzo8a8.pdfIn PDF document text
    • http://vknart.xyz/geometry_dash_free2jz32.pdfIn PDF document text
    • http://solifixogalek.mypressonline.com/contacto_carl_sagan_gratis.pdfIn PDF document text
    • http://tivaxamikesu.iblogger.org/88149808316.pdfIn PDF document text
    • http://rijigikesezaga.mypressonline.com/arabic_alphabet_chart.pdfIn PDF document text
    • http://uorott.com/febutipikirikobana6xx0j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gagavig.rf.gd/rovukuzabujek.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/cholesterin_der_groe_bluff.pdfIn PDF document text
    • http://kapowuxivi.atwebpages.com/diuretic_drugs_classification.pdfIn PDF document text
    • http://renizovakosa.epizy.com/formation_amlioration_continue_nantes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e613f76-06f5-458d-9851-0c30f39ea035/93968940036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b73316-3ead-4392-84ba-db77363e8690/i_vampiri_di_salems_lot_streaming_ita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad2e0d83-e2ef-45d5-b552-f3056ea54cd4/17692217148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ae3843-55b4-48d4-87d4-07cecc8b391f/157223489.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/bugera_v22_tube_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/346ea402-1d9f-4d53-b153-d5c1721f46d2/easy_vegetable_dishes_for_dinner.pdfIn PDF document text
    • http://ruredat.rf.gd/nipokinonalobofovadijase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db62d386-7405-48c7-ae62-38ddc84fdf4d/5457051611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd810f98-1057-431a-b24f-9d0687e3e973/how_to_cook_a_boneless_turkey_breast_in_a_convection_oven.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/67411330747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe71f0d-419d-477b-8767-47daa23a4aa5/39354783456.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

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_off0001996b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1996B 5760 bytes
SHA-256: dfa50fa83aadd4f57b60f772395b8aa4dd7d8721b5b5109c5a1831d64591c7b2
font_01_sfnt_off0001aca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ACA4 15348 bytes
SHA-256: 06e8d0a268d95797b21d7822c2fa2b7dd9c3162e69ec2e745d0560f3ecffee27

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