Malicious PDF — malware analysis report

Static analysis result for SHA-256 5649a825c570571e…

MALICIOUS

PDF

41.2 KB Created: 2020-08-02 12:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff62192dbff9f726e8b6cd6454c70755 SHA-1: 06d09bce332689ddae19ba1a0605f232063fa8df SHA-256: 5649a825c570571e62b32637595cb0fbe27c966c39b0d60c93fff05dcb273b0c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body contains garbled text but also includes the URL 'https://ttraff.ru/pify?keyword=chatting+rooms+with+avatars', reinforcing the malicious intent. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=chatting+rooms+with+avatars In PDF document text
    • http://files.supernawlaw.com/uploads/1/3/1/4/131453194/regugekutubage.pdfIn PDF document text
    • http://files.lesswastemorecommunity.com.au/uploads/1/3/1/3/131383384/1590493.pdfIn PDF document text
    • http://files.yarns-ewell-love.com/uploads/1/3/0/7/130775865/tebujebajexenelutado.pdfIn PDF document text
    • http://files.manakilagigroup.com/uploads/1/3/1/4/131438188/nesixadirusajenipit.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/1/0427/4946/0636/files/51645168312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/convert_to_vertex_form_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/65319800496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/22109102168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8921/6163/files/31574190120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/64647067826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/19224789313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/da_form_1970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0627/9332/files/sevirenijezuvoxurus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/49596637482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/54457719845.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 3

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_off000064d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 5124 bytes
SHA-256: 737f2d380db13ee39d6aa8c3fd0178d69e4c883440e02c7ebe67e168ab6688d2
font_01_sfnt_off00007623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7623 9848 bytes
SHA-256: 0b10083f4fa1b56152cc5aba9a920d70d011f861bf50f1ecaf1069e88368a431

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