Malicious PDF — malware analysis report

Static analysis result for SHA-256 a372f8d5dfaf6c6a…

MALICIOUS

PDF

45.3 KB Created: 2020-08-07 15:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cf6585b8ac678a433e6bfb152abbbd8 SHA-1: cb535ecb2ad6cb8750fe2fbbe602879ec78446a5 SHA-256: a372f8d5dfaf6c6a5694e3622ed93af2a915c66f3a902d34bda7b092f9acdc80
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=schooled+book+pdf`. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. No scripts were extracted from this sample.

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=schooled+book+pdf In PDF document text
    • http://mamosewi.sternarts.com/uploads/1/3/1/4/131437657/riwujuti.pdfIn PDF document text
    • http://dofilaki.baileycreekdoodles.com/uploads/1/3/0/9/130969744/3416157.pdfIn PDF document text
    • http://files.uncdf-a2f-kigoma.com/uploads/1/3/2/7/132740892/sezitavalojej.pdfIn PDF document text
    • http://duloke.joyandjoebaby.com/uploads/1/3/2/3/132302921/fodugosepopojupot.pdfIn PDF document text
    • http://files.acaciaaccessories.com/uploads/1/3/1/1/131163932/1833531.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/1/0435/0522/1784/files/88177118182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/27129933531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomuburisuxenogiduta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/dagamogisozinij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6044/2774/files/97281821767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4638/5317/files/61765476283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/dilojubudubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/87970379424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/93440758195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/98264728447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/86678490621.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_off0000739e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739E 5068 bytes
SHA-256: e2c5985964014c25580ff7c371ceb309db2581717d683e521db2edeff6e07043
font_01_sfnt_off000084dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DC 10372 bytes
SHA-256: 7ec80cb677a3c829443ac5aec571bca79d7dbd612c93697c1cc4a845c357349a

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