Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a206013f9c40db…

MALICIOUS

PDF

74.5 KB Created: 2021-06-14 14:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9f6fb3afde53214f96055df7617a104e SHA-1: cb6dffb79b4dd492e9c34485b3797a21915172e9 SHA-256: c0a206013f9c40db740d46da25120ac623f9e1934b3de07f043a17696796f962
126 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, many pointing to disposable hosting, and is structured as a link farm. The document body, though heavily obfuscated, suggests a lure related to 'song download mp3', likely to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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://inwebjor.ru/pbw?utm_term=jatha+kalise+song+download+mp3 PDF link annotation
    • https://zolopopi.weebly.com/uploads/1/3/3/9/133999976/3120657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474977/normal_5ff3f77267600.pdfIn PDF document text
    • https://kelonefak.weebly.com/uploads/1/3/2/6/132683111/574568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406782/normal_60095f1ba8748.pdfIn PDF document text
    • https://puxipevabama.weebly.com/uploads/1/3/4/3/134308905/gudiduwuwo.pdfIn PDF document text
    • https://turidebi.weebly.com/uploads/1/3/4/4/134496150/339a867cbf3524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_603e38e39c280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_604e6419b41c1.pdfIn PDF document text
    • https://zedaluridafam.weebly.com/uploads/1/3/4/4/134464222/xajafexar_suxabuwapedifu.pdfIn PDF document text
    • https://vakejijumusefuv.weebly.com/uploads/1/3/5/3/135313512/ca4d6daf.pdfIn PDF document text
    • https://gokaraxonupesi.weebly.com/uploads/1/3/4/4/134468062/nisakopesanox.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/6d9d8032-a74e-4723-a6d8-b6f821801f46/79052966608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f701213-d7c3-4346-bc2a-d812ba165308/18411785556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d1e8d06-4f62-403c-8b17-e777f38cde4e/valetinofopudute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6c6e617-03fd-41bc-a24f-951ae50b08a0/matobujogide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b55e4d18-5ff1-4397-8e3a-a8600f329b0d/fuxuzitezikarim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2289bf7-758d-432f-94f3-61e5274dc2b4/60797534674.pdfIn PDF document text
    • http://lomexalipele.pbworks.com/f/kali_linux_virtualbox_default_root_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ae9ea9-84b8-4c2f-85e7-588699c4a301/3191627929.pdfIn PDF document text
    • http://bamedun.pbworks.com/w/file/fetch/144631653/18528342011.pdfIn PDF document text
    • http://nibenaxibot.pbworks.com/w/file/fetch/145076346/tanorigawenuzunireba.pdfIn PDF document text
    • http://fajopab.pbworks.com/f/fibimisasa.pdfIn PDF document text
    • http://fulusivijomu.pbworks.com/f/26787984891.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_off0000e4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FD 5584 bytes
SHA-256: c92e6628181ffdba4b6430dc8b23eaa53bf00ecc4d514bbe3addb89686a35ec3
font_01_sfnt_off0000f7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EC 10744 bytes
SHA-256: e2df882986f3db234195c9fa8783fa5f5843bf9990c500dfa288b5a1c2b241dc