Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec81e86437042f5…

MALICIOUS

PDF

39.3 KB Created: 2020-08-24 05:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26cbce6d521b8c7043c0d4fc66a73e9b SHA-1: 2c01e11b5453bfb74dbd0d0c40847b83fa8da085 SHA-256: 0ec81e86437042f5e997f3ee3ddc375981649fd0439874bee8f3dab719faefdb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects to malicious infrastructure, specifically 'https://ttraff.com/pify?keyword=cnc+sheet+metal+folding+machine'. This indicates a phishing or scam attempt, likely to deliver a secondary payload or redirect to a credential harvesting page. The ML classifier strongly supports the malicious verdict.

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=cnc+sheet+metal+folding+machine In PDF document text
    • http://files.automobiliabybuck.com/uploads/1/3/1/6/131607029/metutozigami.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/1/0428/1909/2647/files/jipazivese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0980/2146/files/bertazzoni_dishwasher_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/nazewikebozog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3450/7424/files/gofula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/3d_grapher_wolfram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/42651271756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/neoplasia_heptica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/muborumuvax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9265/5782/files/fully_perforated_sheet_pan.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
🗂 Part of campaign: automobiliabybuck.com 7 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB6 5244 bytes
SHA-256: bf4b64ebb40b38c6e20baf4f5d156f7f762a9996faac147616a434a20a132442
font_01_sfnt_off0000705c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 9564 bytes
SHA-256: 442c71589e9e906d818ed54e863a8fcc97137802217c8b49654b63d974c755f0