Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6aeba0680ed08a…

MALICIOUS

PDF

57.5 KB Created: 2020-07-29 18:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a517bb06557672283bae4607c193b189 SHA-1: a04345cf24033407ef85dd160b33c12c77bf55c4 SHA-256: 4c6aeba0680ed08ad853d34ef34bb5f1ebba8f4044c9553e6ea1958e9765bc23
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is not content delivery but rather to host the malicious links.

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.cc/pify?keyword=the+moon+of+the+caribbees+pdf In PDF document text
    • http://files.madamedrydensgrade5class.com/uploads/1/3/1/6/131607027/dowejedaj.pdfIn PDF document text
    • http://files.tt-motorcycles.com/uploads/1/3/1/1/131164414/duvunovune.pdfIn PDF document text
    • http://files.amazingdownunder.com/uploads/1/3/0/7/130776757/vafoj.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/1/0433/0687/7080/files/26384136461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/nixixileropexupalugope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/66888744254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/pevovepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/73058799014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/2619000278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6588/5351/files/27582237903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/dasibaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/bexotomizenupebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/temeribeganujeposorax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/83865852316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9998/5822/files/85045379386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/95896728762.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000a8ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA8EE 26920 bytes
SHA-256: e85fcc412b27e734a74b45b9af4c710f5c12cf6c3194cd67fbfdd1a90d23c07f
font_00_sfnt_off0000747f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747F 5240 bytes
SHA-256: 44be21e15e323dd71dbd439139c4f33a1433d142610ea21eba79af719e3c3e32
font_01_sfnt_off00008613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8613 10124 bytes
SHA-256: 803e62b0aefdfb53cc20ee1a4443564a3485f47422ae9982ac30eef89ecf6be7

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