Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd416a60b7474dfe…

MALICIOUS

PDF

69.9 KB Created: 2020-12-30 05:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8cd268728836a51250a885bbcc9ee5c9 SHA-1: ed7a3ba36fa5c6f474c687c877dcb92b929a3780 SHA-256: fd416a60b7474dfed1ea0b31c29967e8f9a10afb6474a5debbd638205bac6a07
222 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The presence of a 'download button' lure and a large number of embedded links suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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://traffmen.ru/123?utm_term=aravinda+sametha+full+movie+movierulz In PDF document text
    • https://static.s123-cdn-static.com/uploads/4491153/normal_5fc3ec9109a63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_5f8e01a318840.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f994ac06c681.pdfIn PDF document text
    • https://cdn.sqhk.co/tesinogopano/InX8Vji/7013224782.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487622/normal_5fbfc5bf659db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445754/normal_5fca3d37e37ff.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/F3ohgrb/color_museum_houston_tx.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/TgdHRmc/bawomo.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/fiwabikagofosumemir.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/ihbjhge/towukuko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD193 5248 bytes
SHA-256: f0cff820b9b148189bbd84a07aa21d396cb296d167649b4f9717cf4db1458ca9
font_01_sfnt_off0000e352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE352 10936 bytes
SHA-256: d4399920385a5cbc64cdb52f2b4ad4cd57e05d093e27f3174197db4809c2f372

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