Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81ce4e3825a62fd…

MALICIOUS

PDF

49.6 KB Created: 2020-08-22 12:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2cc7ee4d0f24ca3a6f241b34e8b25aec SHA-1: c6a08d10df258485ff612022c9714876da6d4cc1 SHA-256: e81ce4e3825a62fdcdbcb5c88903bc980e7787379c61930115e0ad8c91724fa8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and text related to 'Disregarded entity and 1099 reporting', suggesting a lure. The presence of numerous other Shopify links, while mostly benign, indicates a potential link farm strategy. The ML classifier also 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=disregarded+entity+and+1099+reporting In PDF document text
    • http://muwuwejuw.greatandpreciouspromises.org/uploads/1/3/1/4/131407089/riwokarepi.pdfIn PDF document text
    • http://files.hhsmusicdrama.net/uploads/1/3/1/4/131437632/2473822.pdfIn PDF document text
    • http://sijem.lilcongames.com/uploads/1/3/1/0/131070786/pipenesiponuli.pdfIn PDF document text
    • http://files.boundlessk9.com/uploads/1/3/0/8/130813528/wuvufix-wusisufi-lejafafotu-penotubi.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/1/0430/5492/3925/files/59692702327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/akiak_book_guided_reading_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/47631173971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6657/files/75008984771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/sakuvijoxekiweke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/vagadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2375/3635/files/rapikapate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/resume_cours_excel_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/sociologia_urbana_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/23754958625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/38709882352.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 6

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_off000082d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D5 5548 bytes
SHA-256: 3c0c1d810f482054db48dc29cb75a687d4c31414c3b35a9878d8948e354d091d
font_01_sfnt_off000095c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C7 10428 bytes
SHA-256: c628120e2f35d271fb22b0b34d5baf0bf6336eeac72f61e135861595a548dd24

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