Malicious PDF — malware analysis report

Static analysis result for SHA-256 458aac40a3549808…

MALICIOUS

PDF

69.0 KB Created: 2021-01-15 15:27:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b38a0b7c5a19519c40de7115c436c516 SHA-1: 5677f998090f64c7d6fbcd8c7919943dad8a3a7d SHA-256: 458aac40a3549808a554d3e4c3e8b6c735847a32923969ed770fb5adf7f412e3
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains multiple links designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary redirector URL is 'https://cctraff.ru/aws?utm_term=nada+appraisal+guide+for+mobile+homes', which is used in conjunction with a lure suggesting a free download. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://cctraff.ru/aws?utm_term=nada+appraisal+guide+for+mobile+homes In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420235/normal_5fc7771843d2a.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/Rticehj/70113453261.pdfIn PDF document text
    • https://site-1172435.mozfiles.com/files/1172435/gym_weight_training_program_for_beginners.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426682/normal_5fbc6714a8c82.pdfIn PDF document text
    • https://cdn.sqhk.co/fiziroluj/jiRdXaZ/90111649393.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/ruzaganog/32491099511.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/either_and_neither_exercise.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/wajutumovixuzovurijaguso.pdfIn PDF document text
    • https://s3.amazonaws.com/newopetusam/potty_racers_3_armor_games.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/wozoki.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/78217514440.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_off0000d13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13A 5564 bytes
SHA-256: 62bdef5b7fbdd5b58d28d48ab20f3fd433b2e0c262821c42f5e76ada9c5af1f4
font_01_sfnt_off0000e3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FC 10264 bytes
SHA-256: 4c969683d164a3df3afa7fc1c2beee37dcfd41ccd5aa53c3e13eeb6af105d8c4

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