Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d3985727af0f4e…

MALICIOUS

PDF

49.3 KB Created: 2020-08-20 11:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebd8d1937046be3da8f75d5e42b4b70c SHA-1: 832b2a2ab30385dbf8a2b8864d8f04bd542ab324 SHA-256: 31d3985727af0f4ef78811272aee8ad7e30547759ded0c27993ad57275f41b6e
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a travel guide. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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.cc/pify?keyword=best+travel+guide+to+andalucia In PDF document text
    • http://files.veganslovegluten.com/uploads/1/3/1/8/131871518/ruzopi.pdfIn PDF document text
    • http://juzix.oachristchurch.org/uploads/1/3/2/6/132681352/146621.pdfIn PDF document text
    • http://files.jasonmoliterno.com/uploads/1/3/1/0/131069950/6188404.pdfIn PDF document text
    • http://files.flatsfishingonline.com/uploads/1/3/1/8/131872021/dejodod-dijaxunizekuk-bolofiwabixasen.pdfIn PDF document text
    • http://xivitumi.ryanjamesvideo.com/uploads/1/3/1/4/131406801/sinixeramijizib_sikuru_januwerot_neroropenexu.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/1/0430/0242/9593/files/tajos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/definition_of_assignment_of_benefits_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/87036718383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/45580315284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/pradeep_class_11_chemistry_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6211/7788/files/zebirumepolisedewuzadevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/xateminuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2926/5564/files/wewaxejolulidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/kurekadawodu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC5 5216 bytes
SHA-256: 33e5cd89fe4ad911c2ad94709b6cc949995535cc543424e492038248057503a3
font_01_sfnt_off00007e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E92 10168 bytes
SHA-256: 2540f668ce41a62a24a76d79ebd195e772974b7528f371eee10fa56cab21cef8
font_02_sfnt_off0000a188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA188 16596 bytes
SHA-256: 011d3e4d0c04074b7060b71e000457dcf706970ba235581e3bc817650d1f7a27

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