Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60d04f63760ec44…

MALICIOUS

PDF

72.2 KB Created: 2020-11-25 11:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cb667b2ca738b47f763c14ab223ecdcd SHA-1: 18ad46e850d06f7255ee64435878b00c1fc8a874 SHA-256: a60d04f63760ec444f83b6a42de94b471e40f716484e5f721deb9029f0bd2b24
254 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, including a critical finding of a link to known malicious redirector infrastructure and a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the heuristics suggest this document is designed to redirect users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/123?utm_term=tal%2527dorei+campaign+setting+%25285e+pdf%2529 In PDF document text
    • https://sexozorojupur.weebly.com/uploads/1/3/4/3/134390270/07741b1.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/12889394022.pdfIn PDF document text
    • https://s3.amazonaws.com/moxekibupuru/65769818773.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f8e8f4aa3199.pdfIn PDF document text
    • https://morupataniseb.weebly.com/uploads/1/3/4/5/134502176/wexeji-bifesotiko-ganeve-dibovatilova.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/74508062696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391335/normal_5f8ff3c53a794.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/blackbird_tabs_guitar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_5fa39e72493f2.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/6173703.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/74c8086c-7347-43ac-b490-f95255206ec6/unblocked_games_stick_war_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8f9c18c-a722-436d-8f76-e2164f2bfb0f/jaruvepavav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3151895c-1def-48ac-82d1-5254fe4d98fc/las_3_preguntas_jorge_bucay_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87036198-5442-4bc4-9eba-bb0a3057e878/74548492928.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D0 5736 bytes
SHA-256: 5d7ea3b8dbf2d4e339cafccc5ed67627d5fc1448feb3185394574ef2d95f56da
font_01_sfnt_off0000e454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE454 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off0000efb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 10372 bytes
SHA-256: 184fbcaeb2970b4eb64f8f853ff14c564df0635082237dde29520391f855edd8