Malicious PDF — malware analysis report

Static analysis result for SHA-256 13f4192046c242e4…

MALICIOUS

PDF

45.7 KB Created: 2020-08-25 19:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef96a0d062efffe2502ea9ff1dc04dfb SHA-1: 9847425ddfd1eddd19082c85ef738b9a03f7d1c5 SHA-256: 13f4192046c242e493478b6054c348390a0034c23826a381a0fcbcf4e01673fd
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified as a redirector for phishing or malware distribution. The document body and embedded links suggest a lure for downloading a game, which is a common tactic for phishing campaigns. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=candyland+pc+game+download In PDF document text
    • http://files.religiousdoodles.com/uploads/1/3/0/8/130815017/3cf85bf08e6b1f8.pdfIn PDF document text
    • http://files.two-bridges-flyball.com/uploads/1/3/2/6/132681665/beac4054d.pdfIn PDF document text
    • http://zutejuti.theridingtherapycenter.org/uploads/1/3/0/9/130969280/719d00f.pdfIn PDF document text
    • http://gozef.aayogaandwellness.com/uploads/1/3/1/4/131454215/f86768f5ace2.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/1/0434/0046/2503/files/janosatozup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6835/8555/files/90769172559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3740/0999/files/gurekatoripogexebupewoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/beowulf_old_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/what_is_access_control_in_security_guard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/butixefiderumapifeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/atom_python_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/41816671969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/nuxuboleziwakalaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/dejowuriwusawume.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 8

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_off00007285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7285 5220 bytes
SHA-256: d6365f4325c7960bed0bf4b379e289e98304a3324398d1b1dc4573761d9edba5
font_01_sfnt_off0000844d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844D 11432 bytes
SHA-256: a90e26de54930f8f45a607071d3c8ddc7a7c7fc693c7a8c791c9e9b0070992f3

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