Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c5eb9f6e6095b8…

MALICIOUS

PDF

121.6 KB Created: 2020-12-16 01:53:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 001b350b1805a85841de3a97f5cc600d SHA-1: 534fd3c43c4720b629a28579016e8afd225fb8f7 SHA-256: 63c5eb9f6e6095b8a24b6601b7f3bc632c55b93894e42dea3d0ef94644c1522c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, consistent with a phishing or trojan delivery mechanism. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection profile suggest the document is designed to exploit users via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/123?utm_term=half+goat+half+man+greek+mythology PDF link annotation
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/5361857.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417024/normal_5fd63855a6d52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483854/normal_5fc43feda8eef.pdfIn PDF document text
    • https://nolujamikudaze.weebly.com/uploads/1/3/4/8/134868466/zakaxipesig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453764/normal_5fb3b72cdb339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5fad725a9047e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387821/normal_5fcc3f2352a8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5fcef1b059507.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/wujodibu/fanofavu.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/gre_subject_test_psychology_6th.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/dukajagumowatopifenotuzuw.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_off00018f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F93 5128 bytes
SHA-256: d3e90c9bba9e40cb5a149f81c0bb9bb5c28d83565e601ae241176f03080513a0
font_01_sfnt_off0001a0e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0E5 19140 bytes
SHA-256: eed45f57bf22cd34e9a3f475020e973807e45b65e32bac8c5e05a03aba87dae1