Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f369ce1a06ea6d0…

MALICIOUS

PDF

78.2 KB Created: 2021-01-29 01:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3db1fb091ead58105f93ec4431273c75 SHA-1: 64d868c97d58ee7084aaecf3b1ec7646bc2c0e48 SHA-256: 8f369ce1a06ea6d00a0025eb6817e425ce309e8296c29df7fe8eb870939675ae
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to attract users searching for free movie downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a lure to download further malicious content.

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 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.
  • 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://bologen.ru/aws?utm_term=bollywood+new+movies+300mb+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461245/normal_5fdfd480b928a.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/jjhdjfq/8745888314.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_5fe50c0a3de66.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/N48hhjf/21271072621.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416501/normal_5fe3e74e17d0b.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/1efc366.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_5fd674d1a6f64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_600d5e3a2f9d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410199/normal_5ff0f09a16ecd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471095/normal_5ff05dbec8a12.pdfIn PDF document text
    • https://fitokuzigijot.weebly.com/uploads/1/3/4/6/134681543/ribasudigumijif.pdfIn PDF document text
    • https://cdn.sqhk.co/rugugojeba/kBVhjia/kepavimefobidesupawiguwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452386/normal_6006033c7bdba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464297/normal_600d88c0912ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483842/normal_5fd6c39455d0b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mesuwirafifi.rf.gd/trinus_cardboard_vr_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77D 5300 bytes
SHA-256: 33f42ff185cc76006d006d5408488554ddc4052c729b3c91864a6ce8e32e94b4
font_01_sfnt_off0000f977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF977 10592 bytes
SHA-256: d5b71063ff3afb1852fe002ba9459a6ef03b820d8a2503c6f00e38e83fcb9d1b
font_02_sfnt_off00011d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D97 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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