Malicious PDF — malware analysis report

Static analysis result for SHA-256 60085aa7ac67e10a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-03 03:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce2a0040c91c02fcbb524160632c61f5 SHA-1: a1d1b3cdb2da23c6a9203abda44f46530d61daa9 SHA-256: 60085aa7ac67e10a3f006f94b17902fc9c4c3f4e7e634663db02d6f47e47e521
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service at 'ttraff.ru' with a 'kohler engine manual pdf' keyword. This suggests a link farm or SEO poisoning tactic to lure users to malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a high likelihood of phishing or malware delivery.

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.ru/pify?keyword=kohler+engine+manual+pdf In PDF document text
    • http://files.dalessandroscouting.com/uploads/1/3/1/4/131408581/3537013.pdfIn PDF document text
    • http://files.mosaicsbyvictoria.com/uploads/1/3/1/4/131482975/ddfc831080.pdfIn PDF document text
    • http://files.bereanbaptistboone.com/uploads/1/3/1/6/131606155/wetexidumi_torexujakifiw.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/1/0431/1479/1069/files/78136556357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/dd_form_1380_field_medical_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/41968364741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2624/3996/files/54548202511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/41932237228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/wofolajowogar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/faserovubofifusujowejimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5285/0586/files/99666592961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/7384712126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/72039934221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5407/1957/files/bosch_fuel_injection_pump.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/fosizolazulefobunamux.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_off00005cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD3 5244 bytes
SHA-256: a57fca390a81820eefca7d40ad029f2be0cac71d1a8a361b619da52089e88a7a
font_01_sfnt_off00006e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E88 11492 bytes
SHA-256: a2fce36cf469b08655df01cd8eccf34d98d7e2d441c71c1a9d1d4655c91a299c

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