Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc33ea66923b5e9…

MALICIOUS

PDF

52.4 KB Created: 2020-08-12 18:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c28e70b5b2e131156dbf38ffeec31751 SHA-1: 36432e3fbfd4ccb91e80ba5d429b323ef4c30e46 SHA-256: 6fc33ea66923b5e9a7bfd325cb977f5b550708e5e0e6be03124eb339dc7243ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to trick users into downloading PDFs. This suggests a phishing or scam campaign leveraging SEO tactics to distribute malicious content.

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=qaseeda+e+burda+shareef+pdf In PDF document text
    • http://files.downingmsband.com/uploads/1/3/1/1/131164270/noxizuxawoduben.pdfIn PDF document text
    • http://bukawox.cateringbykatherine.com/uploads/1/3/0/7/130740013/2fe83b47679a.pdfIn PDF document text
    • http://files.arfstrom.net/uploads/1/3/2/7/132740172/4882573.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/1/0429/2201/6934/files/4921693609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3463/2607/files/57386934302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6998/9279/files/vegilenuraj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/pekafafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/15162851450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/52728452255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/kizugulogajosuxixiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1057/9865/files/54998797381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7530/1539/files/osborn_s_brain_imaging_pathology_and_anatomy_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/vepazel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1430/files/meguxi.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 4

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_005_off00009f5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9F5F 21440 bytes
SHA-256: ad5631a91189821f459b16fd87885baa69311a8b16f58663829709898efe66fd
font_00_sfnt_off000069bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 5300 bytes
SHA-256: efa3381c6f66be05c478efef0016b32507121016d31eaffcfba87ff7a336aaba
font_01_sfnt_off00007bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB0 10572 bytes
SHA-256: be03c76a1e12458236ea09e8b6e7b0fca4a3510fdf284dfb65849841977567d9

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