Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03dbaed82210352…

MALICIOUS

PDF

69.0 KB Created: 2020-11-23 10:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8e275366902707a79141abbce942ad62 SHA-1: 7255dff64feb1101c5e5bef6116d379fde604f03 SHA-256: d03dbaed822103526998efc69752099bc0f3e04cd4147e3b7c3178ca3be61f07
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This, combined with ML classification and ClamAV detection, strongly indicates a malicious intent to redirect users to harmful content. The presence of embedded URLs and a 'download button' lure further supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/aws?utm_term=tabs+battle+royale++game In PDF document text
    • https://refaxoke.weebly.com/uploads/1/3/4/6/134602084/2884303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f875bd7176c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417329/normal_5fb2623fe6b31.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/fenakutu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f9af68960314.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/062116bd-a03a-43ca-9a42-a592d5e46aa3/sowililizebuzugaxorugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55091162-3c39-4e42-ab7b-840edd81e465/wafatafopemubipozukew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f6d594-29c8-4e01-b4b4-6ac042193060/3845481171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26845857-ad03-4186-ad66-829eb0e6ca67/flawless_body_cream_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d724d86-117c-4b83-a984-6352a5cc7ec3/luwuwagunefimipuziwebufen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10e9ea5c-1e11-435e-9882-6e51e1e7b594/pebumepepegilur.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_off0000d2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B6 5196 bytes
SHA-256: 997d4d030f07bf6f3b87d311c7a5c4649289ceb6a8566e4222a4edc6001d4c0a
font_01_sfnt_off0000e454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE454 10352 bytes
SHA-256: e1a943d37d0b768637213b85cbe77ea885956c7c6227187522898d980b539c8c

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