Malicious PDF — malware analysis report

Static analysis result for SHA-256 424321ef2fb34279…

MALICIOUS

PDF

34.9 KB Created: 2020-08-18 13:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7675415512f36d6d1f9ed9fdaca84384 SHA-1: a1ec97440e42f45f1715952eaad29dce7876879c SHA-256: 424321ef2fb34279a37b23d4763f6376f059a6feb70d27d68292a1dc6172adf2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'ttraff.ru', indicating malicious redirector infrastructure. The document body text, though partially corrupted, contains keywords like 'ambarsariya full movie mp4moviez' which serve as lures to entice users to click the embedded links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=ambarsariya+full+movie++mp4moviez In PDF document text
    • http://files.familyanimalcare.com/uploads/1/3/0/7/130776826/susumoxixanu-telonubike-zubisijeke.pdfIn PDF document text
    • http://xivek.mastergardenersmecklenburg.org/uploads/1/3/1/4/131453046/vobesuparu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/rewulepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/65389960919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/akcent_songs_free_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/ridobaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/nedivozowapamamaronu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/academic_skills_for_interdisciplinary_studies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5280/0920/files/gitufifuxenekezokir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/datudiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/80654134796.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000494f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494F 5476 bytes
SHA-256: b00bb750a19173dd4972aed86a6ad7ac7b3e1a1a9a98bd8945fd901f6b4fc234
font_01_sfnt_off00005bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF3 10304 bytes
SHA-256: 28e922e35cb8fd992d43c5bb6c7af53bf13579feb4017770ea5cb233c97db79b

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