Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f629585cd5e3519…

MALICIOUS

PDF

40.7 KB Created: 2020-07-30 22:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d8d370862e5dd4face7a3a2b3724f0f SHA-1: 388cb5bd20fc5ada417b2083b849c7709422440f SHA-256: 6f629585cd5e35199fbad24e11ef1013a617e7a00b7c80a81bd6779f5e01ef64
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The heuristic firings indicate this is a link farm designed to lure users into downloading further malicious content, likely disguised as a free download. The ML classifier strongly supports the malicious nature of this PDF.

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=alexandra+gheorghe+amantele+trecutului+pdf In PDF document text
    • http://files.elishaharteis.com/uploads/1/3/1/4/131438389/183f2146.pdfIn PDF document text
    • http://files.melissagunasena.com/uploads/1/3/1/4/131438468/josobivituraki.pdfIn PDF document text
    • http://files.ambcircleoffriends.com/uploads/1/3/1/8/131871494/supare.pdfIn PDF document text
    • http://files.6newplays.com/uploads/1/3/0/8/130813314/6994237.pdfIn PDF document text
    • http://files.summersongmusiccamp.com/uploads/1/3/1/4/131454052/484498.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/1/0431/9268/0605/files/48103224087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/3190191219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/76436761717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/wudugobizurexom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9767/0303/files/nudotebojelolusuwazebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/gufuvitibere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7230/6846/files/11060141110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1129/0782/files/73796020852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/41046463872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/tojuriv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9613/6097/files/99563056895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/86738856210.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_off00005eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAC 5332 bytes
SHA-256: 25223bd2b0f399faa952a73cff1052883593dcdfe4b81072b3a07568f8e27f1d
font_01_sfnt_off0000709e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709E 11072 bytes
SHA-256: b209fd9ff7ef30ab24a5ce598fe879b6b6e5a6d3fd6480b3b88c543a9e075645

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