Malicious PDF — malware analysis report

Static analysis result for SHA-256 546edd3c3fa9d8d2…

MALICIOUS

PDF

73.3 KB Created: 2021-02-24 03:11:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 04fbba0e607d81fea35e8272764957e0 SHA-1: fe554cc5b79bf409a1656f9d9742d08062b8b585 SHA-256: 546edd3c3fa9d8d256a4f54a6079eada4019f7fc455927bc2ff4841fae6fc8c5
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, suggesting a tactic to manipulate search engine results or redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a malicious document designed to lead users to compromised or malicious web 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://maypoin.ru/strik?utm_term=democratic+leadership+style+examples+in+public+services PDF link annotation
    • https://pofunowiri.weebly.com/uploads/1/3/3/9/133997400/b3018dd82b466f.pdfIn PDF document text
    • https://giweberemep.weebly.com/uploads/1/3/2/6/132682555/jinafodiwap_guribatepal_pakujazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483610/normal_60157f82b8c65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5fecc5e2c00ec.pdfIn PDF document text
    • https://sazejibapox.weebly.com/uploads/1/3/4/8/134863873/23f900c51f1a5.pdfIn PDF document text
    • https://ferijivoko.weebly.com/uploads/1/3/5/3/135327637/2e08b9ca9bef0.pdfIn PDF document text
    • https://wozogerodinanu.weebly.com/uploads/1/3/4/4/134498855/a5857d3cdb.pdfIn PDF document text
    • https://febavezexiwajo.weebly.com/uploads/1/3/4/7/134703432/42352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392652/normal_60299b7f88efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501356/normal_600fb0f3db34f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493890/normal_5fe9a500b5b11.pdfIn PDF document text
    • https://semulojera.weebly.com/uploads/1/3/2/6/132695334/fe4d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428033/normal_5ff282aca0ef4.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/lorifumofelu/java_7._80_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/zakokizokade.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/reginurabegigom.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/craft_foam_sheets_large_uk.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_off0000e183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE183 5680 bytes
SHA-256: 6de5ce7d1de95928f2a706d9467d1e9e02795bfba6893d32e7952ece101c9d46
font_01_sfnt_off0000f4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B0 10312 bytes
SHA-256: ba55184b41df1edd699223987d0d8a6bccbfc6f8810f3d78b3de66d007317d30

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