Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ed7776dc00c3d9…

MALICIOUS

PDF

40.7 KB Created: 2020-08-25 07:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06864991461cf1b9028fb4ba3986c3fe SHA-1: 45df93b40a45f0991c392056dad280948992efa5 SHA-256: c9ed7776dc00c3d9084f7d1a077c87adb086b38f51503e80371ab698827f7539
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=ambari+video+song++free'. This indicates a social engineering lure, likely attempting to trick the user into downloading further malware or visiting a phishing site. The document body, though heavily obfuscated, also contains the same URL, reinforcing its malicious intent. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm for SEO poisoning or distributing 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.com/pify?keyword=ambari+video+song++free In PDF document text
    • http://rebikasez.baieslings.com/uploads/1/3/2/3/132302842/a6a58cc.pdfIn PDF document text
    • http://files.goodshepherdseniorapartments.org/uploads/1/3/1/4/131453733/4ded372e.pdfIn PDF document text
    • http://zexaje.stmark.blog/uploads/1/3/1/8/131856145/retelepenetot.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/1/0432/6939/0500/files/36735456915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/gedavebefuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1006/3527/files/29236759537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4899/1910/files/perenodugeruvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0771/2155/files/42491782039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/zibumojedopozev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/755849838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/60749899029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/17688105360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/57569003970.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 8

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_off000056a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A2 5384 bytes
SHA-256: d7f5206bb07afeb35559325a1b9e6ac3e64e0b9b1be07d55000c18eef032087b
font_01_sfnt_off000068d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 14780 bytes
SHA-256: b60cf7b4b2ae5c2806d6c72cf45fc4a40f54c76b7a141a428b25186d90280bea

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