Malicious PDF — malware analysis report

Static analysis result for SHA-256 904c90fa03aeec00…

MALICIOUS

PDF

30.8 KB Created: 2020-08-22 09:28:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4428c459ba16b62cc1474e997fe16c1f SHA-1: fe7a699f405e2d7a54e122de9f824143813dd5a0 SHA-256: 904c90fa03aeec0094647165469f864a43d84b7f235a9be7da9c2c692c86c43f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. Crucially, one of the embedded URLs, 'https://ttraff.cc/pify?keyword=pet+animals+hd+images', is flagged as a known malicious redirector. This indicates the document's primary purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing.

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.cc/pify?keyword=pet+animals+hd+images In PDF document text
    • http://files.hillsdalecountychamber.com/uploads/1/3/0/7/130775537/pefusi.pdfIn PDF document text
    • http://files.disctilldawn.co.uk/uploads/1/3/0/7/130775222/3e1f1707f401.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/1/0429/4233/3087/files/34877206881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/63478541607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2952/7709/files/super_mario_bros_background.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1309/3029/files/andhra_pradesh_history_and_culture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/82535321697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/subject_pronouns_practice_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/81803733920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/simple_past_tense_verbs.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 4

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_off00003f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F41 5144 bytes
SHA-256: 1ae1935d8851132bc10047fd8693f7bcf87ae058d925aaebb6985ba195126f6e
font_01_sfnt_off0000508e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x508E 8936 bytes
SHA-256: fbb650f950fd679bd20720cbad5b95e93056894628e61aaf8e060b8e6d2aa898

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