Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbfbc3ba4c521b8…

MALICIOUS

PDF

41.2 KB Created: 2020-08-08 11:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4d5817995280075b7b407df953be1c7 SHA-1: ac8f2712c024b31a7c325134c153c8da8990fe4d SHA-256: 0cbfbc3ba4c521b8920c6fbf5bfb3b1363f5db9dc19083f4b05bb74815fec02f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one to a known malicious redirector (ttraff.com), disguised as a hymn lyrics PDF. This suggests a phishing or scam attempt, likely to lead the user to a malicious site or download further malware. The ML classifier also strongly indicated 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=blessed+assurance+hymn+lyrics+pdf In PDF document text
    • http://ruxid.westhampsteadchristmasmarket.co.uk/uploads/1/3/0/8/130874284/ef597.pdfIn PDF document text
    • http://files.jwphotogallery.net/uploads/1/3/0/7/130775633/9056463.pdfIn PDF document text
    • http://files.dwfd.org/uploads/1/3/0/7/130740069/gakomud.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/1/0434/0344/4380/files/rugeporenumusedigerak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/22618293109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5298/0641/files/48498643547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8607/6309/files/41485598116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/pisufedaputigojedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0725/files/dragon_anal_vore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6772/6232/files/capillary_rise_method_surface_tension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/26339087533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/kivagimotetosigolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/49834843886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3463/9522/files/25868800296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.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_off000062b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 5544 bytes
SHA-256: 0aa91646518eab9192255343dd95ae6eff567e654a0d01ad322b76abd44f3984
font_01_sfnt_off00007570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7570 10088 bytes
SHA-256: 6b2ab4e009574e547e2e8ddc33cb9fdc324a002736f48169b16254ff8329cb98

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