Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fd83f5eb029c5f…

MALICIOUS

PDF

39.0 KB Created: 2020-08-03 07:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07e19405e6148d51fd56aca6aaebe66c SHA-1: 381a02af2e9ab79402920e79d0bca51fb09f85a0 SHA-256: 76fd83f5eb029c5fa41606f19c8f111ac760cda444cebfa0f278aafc8a3f04c0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. The primary redirector URL, 'https://ttraff.ru/pify?keyword=synonym+for+write', is flagged as malicious. This indicates a likely attempt to distribute malicious content or phish users by directing them through a link farm. No scripts were extracted, but the structure suggests a malicious document designed to lead users to external, potentially harmful, sites.

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=synonym+for+write In PDF document text
    • http://files.drewbdavidoff.com/uploads/1/3/2/6/132681951/a63c5.pdfIn PDF document text
    • http://files.transactionbankingacademy.com/uploads/1/3/1/6/131607075/9288390.pdfIn PDF document text
    • http://files.heavitreesquilometre.org/uploads/1/3/1/3/131398253/vefix-kufodapuma-sekakulokoki-biwemozubez.pdfIn PDF document text
    • http://files.tiffinindia.ca/uploads/1/3/1/4/131452858/1252758.pdfIn PDF document text
    • http://wimazav.browndogbiking.com/uploads/1/3/1/3/131383284/d2bb4.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/1/0431/9569/5266/files/tuzewifusowivogitiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4311/0564/files/xss_filter_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/zazexirabejuzux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/75487953376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0956/files/jaxusoxojom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/32159635654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/marijamezixozipomirojobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/59521924556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0467/4727/files/36530780283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/7310020202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/guzabuvanotu.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_off00005b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5F 4788 bytes
SHA-256: 85a80c86fd6f2e8e421fe1b15802db886ba14a5925fccda4e3b092658869d9f2
font_01_sfnt_off00006bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB1 10368 bytes
SHA-256: f6e95d98826c430d68cc9b4562624955873482417ae5c9868f1699193a3225cd

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