Malicious PDF — malware analysis report

Static analysis result for SHA-256 e666305f33d409b5…

MALICIOUS

PDF

49.0 KB Created: 2020-08-03 18:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f95b8a22ee859ef21de496f5ffc28cbd SHA-1: 662f7bed376c0dd5ab141094af0f3236797548eb SHA-256: e666305f33d409b5f216428ae05e7d0d050220723b7f91e0889d8b01fab36922
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=an+introduction+to+behavioural+economics+wilkinson+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and another Shopify URL, suggesting a lure to download further content. The ML classifier strongly flagged this PDF as malicious.

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=an+introduction+to+behavioural+economics+wilkinson+pdf In PDF document text
    • http://files.mx.autumntheodorephotography.com/uploads/1/3/1/4/131406337/40366759b31003.pdfIn PDF document text
    • http://files.moonheim.com/uploads/1/3/2/7/132740362/5243905.pdfIn PDF document text
    • http://files.grayducks.org/uploads/1/3/1/4/131453588/raparapijeguluzenak.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/1/0430/6622/8898/files/zobof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/66362464722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5649/5783/files/79082592426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/12275473523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/kikikajokejozipananafiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/runurogukanetib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/mosikitasosulomowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89965927340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/13790089627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/complete_interview_answer_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/raxojafopawadumab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BD 5620 bytes
SHA-256: 25ae22b7812bdcb5ef61eb6e35e64712afb892fb0d0bfc979637fa91e9218436
font_01_sfnt_off000083b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B7 10276 bytes
SHA-256: f13cbc67d558eedda1c1d2b13be5850cdeaafbacaeb249aba5ddc13d93880591
font_02_sfnt_off0000a6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6CB 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.