Malicious PDF — malware analysis report

Static analysis result for SHA-256 80463b14e54d0362…

MALICIOUS

PDF

82.7 KB Created: 2021-05-23 21:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd9f14b8b0e35490cad389d04baa9c34 SHA-1: 1dc0311123c9f632013e3c5f0d0323d0448a7e92 SHA-256: 80463b14e54d036294d888f0d48f346948ad105c68a3ae7769f320db77d8c5c1
176 Risk Score

Malware Insights

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

The PDF document impersonates a cloud file-sharing service, a common lure for phishing or malware delivery. It contains a large number of external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site or download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://jacksth.ru/strik?utm_term=trials+of+apollo+book+2+pdf+google+drive
    • https://cdn-cms.f-static.net/uploads/4382407/normal_605a00dd2595d.pdf
    • https://cdn-cms.f-static.net/uploads/4368770/normal_602d0baa4b022.pdf
    • https://woduluzotuni.weebly.com/uploads/1/3/4/3/134373450/5026266.pdf
    • https://povazolanatul.weebly.com/uploads/1/3/0/7/130740072/4541047.pdf
    • https://rofaxebawo.weebly.com/uploads/1/3/4/7/134750080/2599910.pdf
    • https://vujewixijul.weebly.com/uploads/1/3/1/4/131437312/garafijijibadoritad.pdf
    • https://pokifinib.weebly.com/uploads/1/3/4/0/134017941/basakanokilugusadaze.pdf
    • https://cdn-cms.f-static.net/uploads/4528915/normal_6013454a51b63.pdf
    • https://fawiwusum.weebly.com/uploads/1/3/1/6/131637021/9918440.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lemefofutomapox/acdis_ccds_exam_study_guide.pdf
    • https://s3.amazonaws.com/paxuvagal/94910453243.pdf
    • https://s3.amazonaws.com/resixexi/tuneborawudujore.pdf
    • https://s3.amazonaws.com/pulujolatepuv/international_business_articles_2019.pdf
    • https://s3.amazonaws.com/fuwawibu/worry_free_business_security_advanced_datasheet.pdf
    • https://s3.amazonaws.com/lefemijip/nimojopo.pdf
    • https://s3.amazonaws.com/tawosutosuxi/sopaziponaraguguma.pdf
    • https://s3.amazonaws.com/fadupazageraf/51812495923.pdf
    • https://s3.amazonaws.com/bagisi/56721003235.pdf
    • https://s3.amazonaws.com/gozilum/63984326709.pdf
    • https://s3.amazonaws.com/pafiganovavi/88410176660.pdf
    • https://s3.amazonaws.com/ladiwuzetawedi/tapazig.pdf
    • https://s3.amazonaws.com/temujonuwu/night_owl_optics_explorer_pro_5x_night_vision_binocular_nob5x.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105a6.bin
f766c2c4fdde6b01b16bcda2e703c0258ef2512201f321ad098cb87e8f096da7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105A6 5556 bytes
font_01_sfnt_off00011895.bin
f857c5dfa42b7e9d9ac2fef1ede68d0a42eefad3b4aecf6c279d798ee475a1d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11895 10872 bytes

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