Malicious PDF — malware analysis report

Static analysis result for SHA-256 8093a21751704319…

MALICIOUS

PDF

76.8 KB Created: 2021-04-08 10:40:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 02ffbe4ac5aa37fdde0bb533b8c02f2d SHA-1: 2be542a848546efd1b629491b1a51d9057e0d181 SHA-256: 8093a217517043190eba9fcb0343095bd561f05f3a74bd4ca1cbf2fa6017df27
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 0.9990

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://nipisod.ru/strik?utm_term=enemy+pie+theme+lesson PDF link annotation
    • http://armlur.space/bharaate_movie_songs_kannadayza7g.pdfIn PDF document text
    • https://dexetejitifite.weebly.com/uploads/1/3/4/5/134576896/lodosudod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_6027eb62baea8.pdfIn PDF document text
    • https://gaturipagi.weebly.com/uploads/1/3/0/7/130739573/rekeduwivebado-zewowezegu-pileli-jisodiseruwu.pdfIn PDF document text
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/maketexogakami.pdfIn PDF document text
    • https://cdn.sqhk.co/jaruxabal/5DhaXjd/moola_saving_mom.pdfIn PDF document text
    • https://cdn.sqhk.co/pulijidapis/Figgin0/vetazi.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuxona/nYghhiW/fivivogig.pdfIn PDF document text
    • https://rikudebuwixe.weebly.com/uploads/1/3/4/5/134589128/db1ad.pdfIn PDF document text
    • http://5dradio.ru/pavaxufahbgcm.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/1ljhike/car_racing_games_free_online_without_downloading.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499329/normal_5fd3db7d38fd1.pdfIn PDF document text
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/e6f18a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_60552b8156628.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/v8ihjjj/bipadalawopudusixu.pdfIn PDF document text
    • http://devlp.club/bikini_body_guide_kayla_free6s9fy.pdfIn PDF document text
    • https://raxipufed.weebly.com/uploads/1/3/4/4/134474150/zajanojazape.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/what_is_projection_in_psychologyff0v7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_606b455b37cb9.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/Egd8qq6/limbo_game_sequel.pdfIn PDF document text
    • https://kaxepiset.weebly.com/uploads/1/3/2/7/132740291/2992901.pdfIn PDF document text
    • http://usmileofficial.site/fundamentals_of_electric_circuits_5th_edition_solutions_manual_free_downloadq8ny8.pdfIn PDF document text
    • https://cdn.sqhk.co/tibatojo/24Ajjig/coin_trip_app_store.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391642/normal_60487471d1170.pdfIn PDF document text
    • https://mulodunewumil.weebly.com/uploads/1/3/4/3/134314444/jurini.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28B 4812 bytes
SHA-256: d2274d062c267f12f6934939a10dca5a14d55164bef5ee98a91f1cd933d82963
font_01_sfnt_off000102d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D8 10116 bytes
SHA-256: 98a72e0f6dc6cf29f50839929bccfe9a0ab5886ce591a23c465ca0b3807a9e4f

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