Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f8f528f59e594b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 06:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5aceb73c53c31f1b7097388280c56000 SHA-1: 3f7ee1c04fce0d107cef73001b31171a0858854d SHA-256: f9f8f528f59e594b91958158fadc91558c373780ef4906322e2f2142fbf115f9
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 ttraff.ru. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. The primary malicious link is https://ttraff.ru/pify?keyword=assembly+language+programming+made+clear+a+systematic+approach+pdf, which is likely part of a phishing or malware distribution scheme.

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=assembly+language+programming+made+clear+a+systematic+approach+pdf In PDF document text
    • http://files.i2cafe.com/uploads/1/3/0/9/130969580/japobejezisuj.pdfIn PDF document text
    • http://files.inneriversom.com/uploads/1/3/2/7/132740525/154488.pdfIn PDF document text
    • http://files.pumpingthecure.ca/uploads/1/3/1/8/131857914/d60231a121943c.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/1/0429/8565/2375/files/vipozisafuvewaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/9949318598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4294/7751/files/que_es_un_estudio_de_mercado_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/ziduzaxugajikadaranewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/bufezagige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5086/6590/files/48312925484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/lefabosafas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/desawedijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/bujupomava.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_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 5800 bytes
SHA-256: aec39800a56f35d8298aaa7a4883055325f205e3eabad55bbd7c8cc6b58c0327
font_01_sfnt_off00007518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 10240 bytes
SHA-256: d35c6d92c78942b91813f42336f3759d5a1e2d7a87ee1c29fa0e07bf3f0150e4

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