Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e75fa718aae3049…

MALICIOUS

PDF

74.8 KB Created: 2020-12-30 07:01:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6f10a9b5110165b05c000683252fbd7a SHA-1: fca97258a5318cb4a9bedb44fb12361302f58e63 SHA-256: 7e75fa718aae304988e8bbc81e30c54adb7f1049e1f14929b842f16f075c5188
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, with a critical heuristic identifying it as an SEO link farm designed to redirect users. The primary malicious URL identified is 'https://trafftec.ru/123?utm_term=chief+keef+finally+rich+deluxe', which is also flagged as an image lure linking to an SEO redirector. ClamAV and ML classifiers also strongly indicate maliciousness, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://trafftec.ru/123?utm_term=chief+keef+finally+rich+deluxe PDF link annotation
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/7072545.pdfIn PDF document text
    • https://mokogexikimowo.weebly.com/uploads/1/3/4/3/134321985/vosulefagatupaxefe.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/27ea8efd8.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/hhcJ5jj/walking_dead_comic_finale_spoilers.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/cbf480a7-4cd2-4221-a373-dd266c6d837f/tobewunuxiwekagegano.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/7996796469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb6595c9-de83-44d7-89d5-8d95ffd1d6c4/faripadogo.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/bungalow_house_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737742a5-20ea-4a4e-baba-096425e4ba67/33355879281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec57947-9007-44db-80e3-8921db94dbca/vastu_shastra.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/suboxonoferakozugir.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/46986863625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec88c17-884f-41c9-900a-4de92975144e/resident_evil_confidential_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/icse_biology_class_10_book.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_off0000e71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71F 5068 bytes
SHA-256: 935c8d740b646e081ed02323363da4c28cbcc31026992bfb62376d4e801d63c8
font_01_sfnt_off0000f860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF860 11368 bytes
SHA-256: edc910e4059ac54b987103e1fd60ff82d849210c0a89638a48565b76bd70c33a

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