Malicious PDF — malware analysis report

Static analysis result for SHA-256 134917165a68c56c…

MALICIOUS

PDF

51.9 KB Created: 2020-07-28 07:37:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24ff00b7028e341275ea207cec340eb6 SHA-1: cfd2ef52fe173812ae24c18cc32741b03ed62b47 SHA-256: 134917165a68c56c56d20a856de16fafc20a840b66bc5401994624c97858b33c
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links designed to lead users to a link farm, ultimately directing them to a malicious redirector at 'https://ttraff.ru/pify?keyword=formwork+plywood+sheets'. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute malicious content disguised as legitimate downloads. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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=formwork+plywood+sheets In PDF document text
    • http://files.keckmanagementroofing.com/uploads/1/3/1/4/131406348/mejivap_farex.pdfIn PDF document text
    • http://files.ctodddesigns.com/uploads/1/3/0/7/130774962/362352.pdfIn PDF document text
    • http://files.melodydye.com/uploads/1/3/1/4/131454286/04ac14fdc12.pdfIn PDF document text
    • http://files.worldwarc.ca/uploads/1/3/2/6/132680986/917b154c60c8.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/1/0427/4746/1788/files/duwopiwexuruduzirofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2838/0839/files/87331062230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9246/6080/files/rodefubopusulonizafowume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4201/1286/files/nolosexovusogitopetog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/xukepit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarexomerowomowubufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7234/8579/files/79545565970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/zejoligeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/72670034571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/ziniwurarukubovefexosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/56265005617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/binexezumevorez.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_off00008da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA1 4836 bytes
SHA-256: d4203eea8028641d7b425361abdd2265216e4446f78f8dbb6244f01939374c87
font_01_sfnt_off00009e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E32 10764 bytes
SHA-256: e2d7c568f58aa9374e6d3f1511edd48c3063239af79719ae43c7122559db41ee

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