Malicious PDF — malware analysis report

Static analysis result for SHA-256 f202e6ce17f29849…

MALICIOUS

PDF

92.9 KB Created: 2021-04-27 03:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 543bcd777f1625322a490e3d1a6a9cf9 SHA-1: 8c26ee2b0cf6fed033913230be50e99073f9502c SHA-256: f202e6ce17f298490a6cf2f7cbd70cbf7d5950f17edac0f2baef1f1df2a99963
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 0.9997

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://jumiwimov.ru/strik?utm_term=6.5+creedmoor+loads+with+varget PDF link annotation
    • https://cdn.sqhk.co/delobepaziw/bjbjiha/54966316038.pdfIn PDF document text
    • http://mamontov-net.cc/catfish_prices_per_pound_2018sb8ho.pdfIn PDF document text
    • http://rewita.fun/xumane2gnhn.pdfIn PDF document text
    • http://lordtrans.ru/nodanememafafawomewiqy4o.pdfIn PDF document text
    • http://tryadasert.online/lafuvokolamotesabaxuxcoogj.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/iifTYja/diwanovetufalejiwime.pdfIn PDF document text
    • http://kataeta.club/cheap_hot_tub_hotels_near_mea1iir.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/cthedp4/gmat_official_guide_quantitative_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/843423a8-63b7-4426-aff4-f0861fa17772/detaxur.pdfIn PDF document text
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_3ac3183f78a44b14a3d3ffd665cb3413.pdf?index=trueIn PDF document text
    • https://0404cab7-c021-4537-be79-420bcb2f88cc.filesusr.com/ugd/52c240_9ebffb3d429d458aa4fa30acf2bb3fbe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/diredixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a48223-b884-48dc-a953-aaea0c10eb08/kupuvudesevotijeruxibogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97b7671b-6984-4745-9010-5fd9f69399d5/87828219484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85287543-90de-4cf8-ac5c-78b2f4bd6f33/ge_dryer_timer_knob_212d1726.pdfIn PDF document text
    • https://d128792e-e0a8-46e0-98ed-b941f5da69b2.filesusr.com/ugd/b98abb_cd806208e8774ccb9cd3bae6bd734000.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/penale/kifefegivuma.pdfIn PDF document text
    • https://30f21d72-2b41-4965-a7bc-2abb02bf1ded.filesusr.com/ugd/47e66e_b3c8aaa5f0c14784a96cd312f211fa11.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5f82262-6f21-480a-a088-537642ad7b1b/what_does_f34_mean_on_a_thermador_oven.pdfIn PDF document text
    • https://da5bec28-7969-4117-8ffb-5069fce5e80c.filesusr.com/ugd/31593d_05d9fe5e0a384f99a0927ef0b2a7d9c3.pdf?index=trueIn PDF document text
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_797eb16c03ba478b8cb64930790766b9.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9C 5720 bytes
SHA-256: f21c7c1bbcd3087817bb85e4c87b910f8cdb09a012b85c514d45382249456c83
font_01_sfnt_off0001400d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1400D 11260 bytes
SHA-256: 535147cedcb2e27ec393fd61bccc29596133e2ae023cb73a9f3c56c5a210417d

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