Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed91d37879be3ef5…

MALICIOUS

PDF

44.1 KB Created: 2020-08-08 20:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f83477ab45a69345d7be7c672a37de5 SHA-1: ad5cc02ba98eeaf9288b8a546922ccd90ef5766e SHA-256: ed91d37879be3ef5c4f58779be0be90112e8ce15429bf9e12fbe0005d6df2424
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains text that appears to be a lure for an 'agriculture information bank'. The presence of a link farm further suggests an attempt to distribute malicious content or phishing pages. 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.com/pify?keyword=my+agriculture+information+bank+pdf In PDF document text
    • http://wevato.channelcenter9.com/uploads/1/3/1/4/131407406/dijaniranesadavovete.pdfIn PDF document text
    • http://wokotoxo.adkstrings.com/uploads/1/3/1/8/131871871/wobepufesodoti.pdfIn PDF document text
    • http://files.dlplastictech.com/uploads/1/3/0/8/130873804/2834c62.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/1/0430/1894/4665/files/86900278721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/80453890027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9264/5790/files/formulas_in_excel_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6163/2406/files/99947251893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/98673444396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/6305149992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/73168422713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/bopisebegim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1604/2142/files/piratoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/wellcare_texanplus_authorization_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/62617718844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/vefekalariwekapexelag.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6F 5608 bytes
SHA-256: 841661a0161ea4444c5db0fb8af329c73e1e5157ede7a0ea80326ee46148fd17
font_01_sfnt_off00007f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8F 10392 bytes
SHA-256: e4f4480e995b89c53e6ea64dccf9d898e023ceb61bf69d74abf288719ebca740

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