Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d68f836d3d4a51…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 07:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcf2ce72a9a5758422e9e27976389d4e SHA-1: 8000c9e96c4db5607ce11e7f840ec1bd0f6622bc SHA-256: 18d68f836d3d4a51e9f8171d4b9122f6234d6de9f6ad4b2a5d0d64e078748c22
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of an SEO link farm designed to lure users with seemingly legitimate PDF documents. The primary malicious link identified is https://ttraff.ru/pify?keyword=afman+17+1203+pdf, which likely leads to a phishing or malware distribution site.

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=afman+17+1203+pdf In PDF document text
    • http://files.dreamaginationrr.com/uploads/1/3/1/3/131379671/d961dcf5dac24.pdfIn PDF document text
    • http://files.denaelovelifestyle.com/uploads/1/3/2/3/132302993/9918008.pdfIn PDF document text
    • http://files.nestresidential.co.nz/uploads/1/3/1/4/131437812/5067263.pdfIn PDF document text
    • http://files.worldtraveladventurer.com/uploads/1/3/1/4/131407194/5900834.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/1/0429/9902/1731/files/betamethasone_valerate_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/larebop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/fifigasibuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/zonokanejefibefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/93474519668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/4_antenatal_care_visits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6366/5062/files/que_es_el_analisis_vertical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0485/3406/files/bexabujowuwifipidore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/vector_algebra_problems_and_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/rajapamemagutijovixaxiki.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
🗂 Part of campaign: tekesintidewater.com 5 samples

Related samples 5

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_off00006a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A94 5440 bytes
SHA-256: 9e631f51a04019499e7a285d36aab2fd72a96d6c6f3ba87540213d006cdb34a7
font_01_sfnt_off00007d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D13 9860 bytes
SHA-256: 1c24baefbb7a5e134dad58ddb44dff83e3a62fb00837edf5e2ef26ffeaf5494a

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