Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd74095fdad08f47…

MALICIOUS

PDF

45.3 KB Created: 2020-08-07 09:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1dbf6ca1fdc44a5b1086d6fe3fc4fff8 SHA-1: 714ce57340f156bbd0b2e71355a6f435d8fc5365 SHA-256: dd74095fdad08f471b8d1e218577b296efa79c9a0ae0a7f0fee1e5a249865588
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, indicating it's the primary lure. The presence of numerous external links and the redirection to a known malicious domain strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=liste+adjectif+anglais+ordre+alphabetique+pdf In PDF document text
    • http://files.indestructiblekeychain.com/uploads/1/3/0/7/130738779/xulevomufigosumeb.pdfIn PDF document text
    • http://files.poiseaussies.com/uploads/1/3/0/8/130874110/wajededuwuv.pdfIn PDF document text
    • http://files.dakotadrywallnw.com/uploads/1/3/2/7/132711966/xirovomufinevi.pdfIn PDF document text
    • http://files.dilodging.com/uploads/1/3/2/6/132695575/5fe7355f572384.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/1/0433/5340/7646/files/waving_hand_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/30206054278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/55879329354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/79305905510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/fewevimajifinusivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/luwasokokuwir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/67974108292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6080/3237/files/bienestar_socioafectivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/88084348597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/24275932916.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6817 5700 bytes
SHA-256: aca255f66d64d1d7aa22da9ba8f7bedc2b7c9bb410a6e4ffe77c8721428be9b0
font_01_sfnt_off00007b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B74 13928 bytes
SHA-256: ed748ca6c2f492e73d265525bc6d472680339fd231ba2aaa927a8161e137fc2a