Malicious PDF — malware analysis report

Static analysis result for SHA-256 856a79c72c8d1b7c…

MALICIOUS

PDF

95.9 KB Created: 2020-07-30 03:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f095127e5550e5b02125bde9d44f76a SHA-1: 5b096e9db28d220a551a9ff12f47b5d0e24d2635 SHA-256: 856a79c72c8d1b7c7e001c33dd55729f4ed2645a1a4762e6fbdd8d2d5ec4e892
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to a 'missed abortion pdf'. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm designed to obscure the final malicious destination. 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.cc/pify?keyword=missed+abortion+pdf In PDF document text
    • http://files.djsfitnessevolution.com/uploads/1/3/1/4/131408209/sikiperezutigimexus.pdfIn PDF document text
    • http://files.pmawm.com/uploads/1/3/0/7/130738933/lesutubivutuwi_tekivegirole_gagujapodunen.pdfIn PDF document text
    • http://files.mountaintrafficcircle.com/uploads/1/3/0/8/130814208/fopigedilowi-zixajeni.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/1/0430/8788/8551/files/30927672770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/xidesafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/64364295279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0952/2339/files/guwebukavagolimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/xutawenuwosivefinenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/japuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/78001089878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3349/1613/files/wubakefajokadamur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9557/0072/files/57239885959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4330/7175/files/60536178115.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 7

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_off00013d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D3B 4936 bytes
SHA-256: d5ca33be3e6ba49882049f33175a0f3e907816c1e808727e91c80e4f6ac29758
font_01_sfnt_off00014e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E06 10488 bytes
SHA-256: c698856e8bd7153e7a8ff5988e631f82c2f1b5bcbbc8fb531d17dae4604c5980

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