Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7cb9816ba8ebdf…

MALICIOUS

PDF

71.2 KB Created: 2020-11-19 16:16:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 465cf5a86681830fb724467f0ecfe46c SHA-1: f6b93695eb14c731f0497179e7b2cdb8812b0639 SHA-256: 7a7cb9816ba8ebdf05b9f57139e9f85a75ee35d661902b93535dc48db81281a1
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate an attempt to redirect the user to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://trafftec.ru/wb?keyword=chori%20chori%20movie%20%20720p PDF link annotation
    • https://wevupifusa.weebly.com/uploads/1/3/4/3/134356286/5efd97c8d70.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/sumadolewe-goganipodit.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/3a9a8.pdfIn PDF document text
    • https://lavigumujow.weebly.com/uploads/1/3/4/4/134438710/wapegugeme.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/kapavogefogep_nilavugezabo_gakodidajapore.pdfIn PDF document text
    • https://gorejorifal.weebly.com/uploads/1/3/4/8/134888975/sopulozokumova.pdfIn PDF document text
    • https://palifeselaliku.weebly.com/uploads/1/3/4/4/134441248/b84bdd6.pdfIn PDF document text
    • https://golasokovefo.weebly.com/uploads/1/3/4/4/134490481/f8ceacaa0094a7.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/dd9b521.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/memul/28746772988.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/tirikuzorafep.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/sageniluroninoxutevupifi.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/timep.pdfIn PDF document text
    • https://s3.amazonaws.com/vezosoluvezoj/trung_tam_asia_ca_si.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/portland_summer_league_news.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_off0000cf70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF70 5072 bytes
SHA-256: a4c1733d7ed09a132b84db1c07caaf69319de980fa8e58810204cd923fc740a0
font_01_sfnt_off0000e097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE097 10328 bytes
SHA-256: de71883f0b549b7a5399be425737537aaafba93da8c3d63c33d268587ab9ffc9
font_02_sfnt_off00010412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10412 2832 bytes
SHA-256: ee8afa51e50492bdf4d25b6b01818d2021856a0eb5271b70f188e6d094f25891

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