Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9519e116304e06…

MALICIOUS

PDF

68.9 KB Created: 2020-11-25 00:19:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: faebddff7a537e6b594263bf113fff06 SHA-1: 3edfc2f7fcabd998fc5df2bfb22bf80c706185fc SHA-256: 0b9519e116304e061abe2c25a29c6b57c3f0249282fb493b74eab0e719cf9e43
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of embedded URLs and the nature of the link farm suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://trafftec.ru/aws?utm_term=tamilrockers+avengers+movie+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4394077/normal_5fb6777a86071.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/2e28ed.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/vimutijuxoj_dufusonik_kogixolinaven_peperuzus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fbc622013b82.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/golesetixoputafufi.pdfIn PDF document text
    • https://xewaxamuroz.weebly.com/uploads/1/3/4/5/134529724/zineronarajox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391037/normal_5f97c7686029b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415748/normal_5f9cebd410506.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/supiwatoxanesurev.pdfIn PDF document text
    • https://dujefeva.weebly.com/uploads/1/3/4/5/134589135/wasuwuxe_texedanularali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384307/normal_5f9d231e77549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5f9b2c7e54622.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/6416572.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/12cadfca-5b94-456a-94bc-0431af4b49d7/11118125664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0acbb522-480c-4d04-80da-ac987d052053/61994834474.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_off0000cf6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6B 5276 bytes
SHA-256: 5ef6993eee05d277e5b5141a7812703e521741402a309f717318057a3d424fb2
font_01_sfnt_off0000e151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE151 11048 bytes
SHA-256: bf124106708589120ab383a828ecd976c2d1dd2bb19cc770eb4d2cd8c3b5b6a5

Open this report in the interactive analyzer, or submit your own file for analysis.