Malicious PDF — malware analysis report

Static analysis result for SHA-256 1697b5f497d89f79…

MALICIOUS

PDF

43.8 KB Created: 2020-08-08 06:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d257ef71653773d29f459a7b8157b174 SHA-1: 934fb6f6ad43973ec987be930ff9bf4b8de4b34d SHA-256: 1697b5f497d89f79ed2eacee8cf996030a9ebda3f290fc64d3b13d1d3b93363e
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though heavily obfuscated, also contains a reference to this redirector URL. The presence of a link farm and the use of a redirector strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

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=assimilation+in+phonology+pdf In PDF document text
    • http://files.chenowethbairddesign.com/uploads/1/3/1/8/131871894/kawal_fudomur.pdfIn PDF document text
    • http://files.littlepieceofmyheart.com/uploads/1/3/0/7/130740517/aaef0f352ce451e.pdfIn PDF document text
    • http://files.anabeljuarez.com/uploads/1/3/1/4/131452942/8b2f1b09.pdfIn PDF document text
    • http://jibopube.dlitefulchocolat.com/uploads/1/3/1/6/131606552/kisegajagesi-jafogamot-vutapovakegimit.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/1/0437/1916/4058/files/neural_network_cost_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/jibikakugumofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3681/0152/files/24415397616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/jakunot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/60535627107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1011/3188/files/50423395456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/98295578804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/66007930005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/ligodegizuwekegamegokokum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/20023227278.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_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 5452 bytes
SHA-256: 3f521d6753f76d6fa5ce37bc90ba858ef2b57343c44dbeb25aea272794562a84
font_01_sfnt_off0000762c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 13220 bytes
SHA-256: e29c88664964b940e69b8f0f4e3758db7db5582e7c4bc193475838b632dfc4bf

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