Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf24a82c26be16d7…

MALICIOUS

PDF

145.7 KB Created: 2020-08-01 13:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 366887e693aaaa3db7fb9cbbdd5ab2bf SHA-1: 408481796554ceeca777afbc32a18e4ff010074c SHA-256: cf24a82c26be16d7fdbccd1b0c3fab2bccfc6e3c3cfaffbf5782fc65c20b25d6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=top+anime+movies', which is also flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.cc/pify?keyword=top+anime+movies In PDF document text
    • http://files.balloondecorators.ca/uploads/1/3/1/4/131438120/d08c4.pdfIn PDF document text
    • http://files.kcrowell.com/uploads/1/3/0/8/130814636/tawagujoj.pdfIn PDF document text
    • http://files.greenwillonline.com/uploads/1/3/0/8/130874469/sobisajagaduzeg.pdfIn PDF document text
    • http://files.dtsmidisystems.com/uploads/1/3/0/9/130969761/devisolaluli-titeralamoxuz-wegaparivagi.pdfIn PDF document text
    • http://files.memberoftwotribes.com/uploads/1/3/0/9/130969354/3149569.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/1/0434/3067/4597/files/46796056137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9641/6161/files/natelabijakugusifor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/77303420519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/patopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/13802298832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/diwirosugotasuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/85666882688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/30016258809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/25123676595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/fetozixodapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/27510683748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/14183719889.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15367 43572 bytes
SHA-256: a55a238cd7952101d1e6378167d092baf6c4744305d6b173356814ea91458655
font_01_sfnt_off0001d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D999 4844 bytes
SHA-256: 0e13b299e0b10307316ac4c3e8ff17201dac8c11bdd56b0559eaa84cac680b4d
font_02_sfnt_off0001ea0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA0C 18980 bytes
SHA-256: fdd410735baa08499cd7ed2d4b96126f56692a3640b6287cee45977c3314a7dc
font_03_sfnt_off000223dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x223DD 16068 bytes
SHA-256: 89247d3646e3773572243f1d4b0449240b5d7bcbc9865045ac28c7845acd9c8f