Malicious PDF — malware analysis report

Static analysis result for SHA-256 8489484e09258abd…

MALICIOUS

PDF

74.0 KB Created: 2021-06-06 05:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 77b9d67ccc08997dfcaa3ec0c9e0b5dc SHA-1: 25bf28f33f745bfdc08d3f189d4a0907811b39d5 SHA-256: 8489484e09258abd9c91426eea07b95aaaa9a2366179027cf77fb4d26c47ba07
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm designed to redirect users to external sites. The document body, though partially corrupted, contains text related to 'Gta 5 money glitch', suggesting a lure for potentially malicious content or phishing. The presence of numerous external URIs, many pointing to disposable hosting or redirectors, reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crysiq.ru/pbw?utm_term=gta+5+money+glitch+ps4+online+solo+easy+2020 PDF link annotation
    • https://gupesasuxubigu.weebly.com/uploads/1/3/4/7/134717911/sanumesojimibe-togubedawawina-vibigiguf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464720/normal_601ac44577575.pdfIn PDF document text
    • https://kuratiwupojaxu.weebly.com/uploads/1/3/4/0/134017491/gemadekudususovek.pdfIn PDF document text
    • https://sizuginoten.weebly.com/uploads/1/3/4/4/134490660/xixatifagatuxo.pdfIn PDF document text
    • https://xegiduburap.weebly.com/uploads/1/3/5/2/135294675/biwovofobor_waradivube_boxonivofiwej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_603686c08c2d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_604e4c385b16e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481069/normal_6036a2d9e637c.pdfIn PDF document text
    • https://vopoxeja.weebly.com/uploads/1/3/5/3/135346001/rajaweren.pdfIn PDF document text
    • https://kigefewapese.weebly.com/uploads/1/3/4/5/134528385/vebixiz-soxololekega-fevanasag.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/ab2711e3-ef35-47d6-8d0e-22b0e19089e8/loxubonuropadijikifiso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f8b5c7-e901-4661-802d-fadab308fb6d/pewuk.pdfIn PDF document text
    • http://vulazojab.pbworks.com/w/file/fetch/144612156/tawivubi.pdfIn PDF document text
    • http://ganosidil.pbworks.com/f/how_much_does_it_cost_to_service_a_toyota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2917b07-f9f3-48b1-94dc-087fe1a8aaf7/ropobaduvuzaxar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a6acc1f-6492-4201-b0d1-b32d76d183b5/first_aid_2017_corrections_2018.pdfIn PDF document text
    • http://noxiwako.pbworks.com/f/resumen_de_la_alegoria_de_la_caverna_platon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b743202-be73-4ef5-97b4-af1c0743cf25/how_to_pass_danb_radiology_exam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd4039dc-eed4-472b-a461-78c15ce6ad60/69509094985.pdfIn PDF document text
    • http://xuvabufoj.pbworks.com/f/tufojepabezaregodexazebod.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_off0000e368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE368 5868 bytes
SHA-256: 1067a8a10fb1de9396700c412b1717ca82c89765e7de5888316963779425fc4e
font_01_sfnt_off0000f75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75A 10204 bytes
SHA-256: bb631cf984defe79c6e72a94ae1cba3f08bbbe45b5bafcc0e538754ed8658f82