Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ff6c766a9d4fed…

MALICIOUS

PDF

44.5 KB Created: 2020-08-18 22:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b74220e6a23549fa529f52cac85fa1af SHA-1: 07a4ee158eaccb3fbf9aea7dabdd6417d38aace2 SHA-256: e3ff6c766a9d4fed3090007708dc9f5ec4572552712d3b498a56431d7219c0fa
194 Risk Score

Malware Insights

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

The PDF contains a link farm with 24 external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=apa+bibliography+page+format'. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware delivery. The ML classifier also strongly indicated maliciousness.

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=apa+bibliography+page+format In PDF document text
    • http://files.aidankeaneart.com/uploads/1/3/1/0/131070674/xotefobasejoxas_kowedexil_zagutanek.pdfIn PDF document text
    • http://tijowo.pdxprays.com/uploads/1/3/1/0/131070993/9ddae7dbed382b8.pdfIn PDF document text
    • http://files.bluazul.com/uploads/1/3/0/9/130969999/lixevu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/95123516935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1299/2674/files/apollo_munich_mediclaim_premium_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/bevub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/31800143077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/kumivorebixev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/13659944049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/assertiveness_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/davinuxinuwawulatow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/97017838361.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 3

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_off00006419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6419 5048 bytes
SHA-256: 4e3b31a92c2218aba679ea5c8b250d528ede3f5916704f50401d0a1fd36bace2
font_01_sfnt_off00007549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7549 9932 bytes
SHA-256: f9ba89038bfc9ae89a35369fc9665ffe0314fe345efba57e7ca59bb6188dd304
font_02_sfnt_off0000974d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x974D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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