Malicious PDF — malware analysis report

Static analysis result for SHA-256 737fcf911bb1189f…

MALICIOUS

PDF

48.2 KB Created: 2020-07-30 06:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e9801d42685c1eeb6de720548222092 SHA-1: 0ae4537b5fe74409836860a857ac51d82e8ea49d SHA-256: 737fcf911bb1189f50e256a6251ad0600175f86fa0931888b88361fcbd7b6f9a
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a known malicious redirector, ttraff.com. This indicates an attempt to lure users to a malicious site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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=difference+between+bryophytes+and+pteridophytes+pdf In PDF document text
    • http://files.trezevantchurchofchrist.org/uploads/1/3/1/0/131071166/7dc5bf5a6e43.pdfIn PDF document text
    • http://files.paulashleyfowlerphotography.com/uploads/1/3/1/6/131636969/6212156.pdfIn PDF document text
    • http://files.bethanywelchfitness.com/uploads/1/3/0/8/130874612/8ae5ec226e.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/1/0434/9421/1750/files/xotidosem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/75328044293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/lofigabinirabefug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/repevuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/78376556326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/ruvadutikilavajugava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/xakegisemeratakiwojowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/gurenasojirixob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/defatawadekokunalofetun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/7199213728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/9265600778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4329/9234/files/21178734291.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_off00007e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4B 5332 bytes
SHA-256: 24ecc18a597a79788b5019795debc659d274774b9e26a49550475a5d68e92452
font_01_sfnt_off00009070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9070 10252 bytes
SHA-256: 979f65f57e0bf98c9d0b4df7fad8592ba29b1bec3b1674afa9cb4d3546e7ebc9

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