Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00bda801ed6a30f…

MALICIOUS

PDF

81.4 KB Created: 2021-03-11 13:07:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 23dd5a55c52cd0966ee935c875251e7d SHA-1: 2a1c947a5f9fe81d62a71f6829efc0e8c41a9d33 SHA-256: c00bda801ed6a30f9d5f4633bc1988863430b938575d4f9a1f6f5816f764d22a
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://soxebez.ru/strik?utm_term=how+to+empty+keurig+2.0+water+reservoir PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377095/normal_5fdf11f5b78de.pdfIn PDF document text
    • http://pshcomonhere.xyz/five_point_someone_free_downloadtb6a1.pdfIn PDF document text
    • http://kelnoteres.xyz/gevarukoredtui0i.pdfIn PDF document text
    • https://cdn.sqhk.co/dufimogemeka/icha3gg/divarication_in_a_sentence.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446147/normal_6041bfe5ae70f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417534/normal_5fcecdff4664f.pdfIn PDF document text
    • https://cdn.sqhk.co/jadidawa/KSfkijj/robert_frost_fire_and_ice_interpretation.pdfIn PDF document text
    • http://vpntop.info/zabuvagofutodohoei5.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/kSxrjho/sadejavudixaxuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481847/normal_5fd7c515aa86a.pdfIn PDF document text
    • https://cdn.sqhk.co/fepogosu/heEhcif/nonifixurinawevanijuru.pdfIn PDF document text
    • http://8bitbeardsco.com/rerenodimobujikudiporbyzk.pdfIn PDF document text
    • http://kittyplay.online/gemumiwalivewurivorinethlsrp.pdfIn PDF document text
    • https://cdn.sqhk.co/gozigawefo/hashdR0/tile_tracker_long_range.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_ed831fe4f62c40bcafdc4f2c618ee58e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/40d7b2a1-3689-4825-af76-56cc86574cec/interior_design_certificate_course_in_kenya.pdfIn PDF document text
    • https://9c43cb74-45e3-47de-9527-fda2e8336169.filesusr.com/ugd/af0aa9_4dd2e3754e20460ca6a4c403fba3ccb6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0436ae0-60c4-4fb8-a482-5dfee2695b06/mini_cooper_r53_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93186d1a-a010-4020-a038-67e9127b8a48/a_game_of_thrones_book_1_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a05efcdf-82a4-46ac-96a8-8227c0310ee2/safanajetotubar.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_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 5692 bytes
SHA-256: 86a6b957aa44a0eeeca609b902e8b911914f4b78fa5433282c06952acb870320
font_01_sfnt_off00011527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11527 10380 bytes
SHA-256: be10103f1c7b03c6829903ed0d858e63fc48eb056505a984ce5b5c8726e8a811

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