Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b2c4a127dadc6c8…

MALICIOUS

PDF

67.2 KB Created: 2020-11-25 06:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 77c4736995f637337f7823e6f5d27d64 SHA-1: 1ab087dd88620854f9ecc5ba0f766c2b327148fa SHA-256: 5b2c4a127dadc6c83c12808981c742ecd067eb150ce187bbde0f695333a98af4
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical PDF_SEO_LINK_FARM rule indicating a mass external link farm. The ML classifier also assigned a high probability of maliciousness. The embedded URLs suggest an attempt to redirect users to potentially harmful content or phishing sites, consistent with a phishing or SEO spam attack pattern.

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://trafficel.ru/123?utm_term=line+of+sight+dissent+lyrics PDF link annotation
    • https://moxiwomalupul.weebly.com/uploads/1/3/4/5/134598527/dc26bfc949b330.pdfIn PDF document text
    • https://raboxodibol.weebly.com/uploads/1/3/4/0/134096122/2164644.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/2038155.pdfIn PDF document text
    • https://mipolapepel.weebly.com/uploads/1/3/4/3/134395859/bugawumenadesu-futilinebejuj-gunojiledifapij-xobomoza.pdfIn PDF document text
    • https://kolapudavuvoxe.weebly.com/uploads/1/3/4/3/134315715/330b23.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/zujaveseporuw.pdfIn PDF document text
    • https://vuwejugo.weebly.com/uploads/1/3/4/3/134309576/1899945.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ratot_muweliwamopoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/guvovigo/lenufejawe.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/php_code_formatter_notepad.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/zelivinuka.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/intelligent_business_style_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/xokolotunuxikezijeti.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/60577331072.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_off0000c925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC925 5116 bytes
SHA-256: 1d29b71da9888c761da5f37d24bd8633ea827ddd67f13f94cd29e9eaeb46574c
font_01_sfnt_off0000da9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9A 11016 bytes
SHA-256: d7c170ec5d115eb85723e11562ae6be240ea2503d978c8cd26c7c1c54c3a3c8b

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