Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d51c72a5b2c8649…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 07:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c399c1eda09987ae1b52be9c85471583 SHA-1: ae1d3c140d321839619c834de1854fb8e07d2fc5 SHA-256: 7d51c72a5b2c8649b693b5687866816b8be31dda360a7244ff4272707a1c7609
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body and heuristics suggest a lure for free downloads, which is a common phishing tactic. The primary redirector URL is https://ttraff.com/pify?keyword=morfologi+diphyllobothrium+latum+pdf, which is used to funnel victims to other potentially malicious content.

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=morfologi+diphyllobothrium+latum+pdf In PDF document text
    • http://najeke.fusiliersheep.ca/uploads/1/3/0/8/130813765/115982e56bd.pdfIn PDF document text
    • http://files.lisawipperling.com/uploads/1/3/1/4/131406434/6248427.pdfIn PDF document text
    • http://files.galleryburguieres.com/uploads/1/3/0/9/130969356/ab867102ce3cc9.pdfIn PDF document text
    • http://files.ubwaosu.com/uploads/1/3/0/8/130814631/jefepemexi.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/1/0431/6237/0210/files/50032379008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5788/8932/files/spongebob_campfire_song_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/55710198749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/10461299981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/32895036369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3070/0455/files/pumoresatexore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9116/3291/files/watch_doctor_strange_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/xumupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/54158295126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/nijov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/1695719079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/gimon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/gufizilebeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.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 6

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_off000068a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A0 5524 bytes
SHA-256: 05e88575dc213d1b47f434d30c4dba5984ec6f86391daff2bf5feb00848495a9
font_01_sfnt_off00007b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 10620 bytes
SHA-256: 46fdf14c7a02a69054995d2e449dd0f8d4e6e8e9b063cf25971dc401c06a99a3

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