Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb6ff6ecd8bb86c…

MALICIOUS

PDF

42.6 KB Created: 2020-08-04 23:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 648eabef6e007f76c8f8370ff6deb5b3 SHA-1: a6fb0774b608676ef75010360d64a9f4ab3284d3 SHA-256: 1fb6ff6ecd8bb86c29222b808181d4327ad1bcef08c7514dece9ca0c2f35f01c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=discussion+method+of+teaching+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, also contains the aforementioned malicious URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site.

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=discussion+method+of+teaching+pdf In PDF document text
    • http://files.cypresscoveconservancy.com/uploads/1/3/0/7/130776542/e5809b993664.pdfIn PDF document text
    • http://files.kd-photography.com/uploads/1/3/0/8/130813134/miviv_zidup_makanup.pdfIn PDF document text
    • http://files.kspaceonline.com/uploads/1/3/1/3/131380868/b7e90.pdfIn PDF document text
    • http://files.goodshepherdogden.org/uploads/1/3/1/1/131164386/ff25b830930c1.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/1/0431/6892/3799/files/pevitag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/gasuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/maths_construction_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/488979600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2484/1890/files/jisupop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9882/8954/files/journey_of_the_flower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/43933170045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/58335085815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/wadapavodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/nikalogavizakup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7694/3000/files/chemistry_for_engineering_students.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_off0000696c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 5440 bytes
SHA-256: f61919f3d28755a679dd44698470946eb4dd7e72863a50f0ebd22197e8d44035
font_01_sfnt_off00007bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD3 9776 bytes
SHA-256: f4aa6cd694f3ba1506c4e887bb70bd0a7008193fe08e1cf4b484d174b868320b

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