Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d85fa71754561fa…

MALICIOUS

PDF

39.3 KB Created: 2020-08-21 21:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffab19c9fa8b1f8ce8d6fd211ea6fb29 SHA-1: ebc56ef6bf40b5c08a29f99c373096dfb51d6f1e SHA-256: 0d85fa71754561fa3942e38f6156cefe158b6db922689271dad4c3e899d8bd11
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominently redirecting to a known malicious URL (ttraff.cc). This suggests a phishing or redirection attack, likely intended to lead the user to a malicious site. The ML classifier also strongly indicated maliciousness.

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=kalinka+sheet+music+piano+pdf In PDF document text
    • http://files.patrickmcguire.org/uploads/1/3/1/6/131606605/8730414.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/1/0439/1459/2408/files/satukumarajixajuwepiluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7360/0678/files/47777351517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/73247735161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2734/6086/files/amway_products_price_list_for_distributor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/dijejaduxovur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/suxonuleropuraziresew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/ritovaruboweretorogodix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/who_must_file_form_8862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/niroxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3268/7271/files/alter_ego_1_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8396/4317/files/9864965797.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 1

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_off00005b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6E 5332 bytes
SHA-256: 4480ffde5043b2a43742f140c3332e7b2532e34b7f3f0df6e4466988c783ed2e
font_01_sfnt_off00006d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D66 10380 bytes
SHA-256: 68c3db96e04e0b5975d152c6ebf61fd2f37e4825ea984bf9b361e42f2ef02d29

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