Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec738e5e05556738…

MALICIOUS

PDF

42.6 KB Created: 2020-08-28 00:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a455f22bbd531f671758c8003a16c8f SHA-1: b928597d3dea3eefc79daab5117362154ed00029 SHA-256: ec738e5e055567384646103e6beff9c5a2d5e176ad92ed8d65c339490767bf21
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though partially corrupted, contains text related to a 'turbo convection oven manual' and includes the malicious redirector URL, suggesting a lure to trick users into clicking 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=turbo+convection+oven+manual In PDF document text
    • http://dosepidag.treatingcbs.com/uploads/1/3/1/1/131163664/tarajix.pdfIn PDF document text
    • http://files.jennifercrowderartist.com/uploads/1/3/2/7/132740249/sajajekofome_vusove_tagamitezejiwa.pdfIn PDF document text
    • http://maxuxaxu.theunbrokenbody.com/uploads/1/3/1/4/131408027/7463539.pdfIn PDF document text
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdfIn PDF document text
    • http://pufipox.walpolenhmassagetherapist.com/uploads/1/3/0/7/130740080/800800.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/1/0433/0084/7781/files/aliens_colonial_marines_free_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1119/4525/files/jijiwiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4014/5313/files/ultimate_vegan_grocery_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5543/8234/files/50150540438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/2569/9740/files/irrigation_system_in_sri_lanka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/2020_publication_15_circular_e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/32973644457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/kasuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/cachetazo_de_campo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/96248275636.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_off00006a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 4916 bytes
SHA-256: a3f611a6dc00da428200a783b0efc11cd6e8fb2117411b3f9331cbccd1b584e3
font_01_sfnt_off00007b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0D 10088 bytes
SHA-256: 5f82a3ebc9148fe354b58b8fa6691d5a0d1c19ff8886bb671eca54e5e8b67863

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