Malicious PDF — malware analysis report

Static analysis result for SHA-256 442045704545ee5f…

MALICIOUS

PDF

41.2 KB Created: 2020-09-18 13:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 996828f90f689f60ef9a563995b68456 SHA-1: 63f8dd2db58901dacdb64ce1ea85146a065350b0 SHA-256: 442045704545ee5f2206fbc2bc906aa80009f3fd3d9ccf4bb5c3028974f4c467
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL is 'https://ttraff.me/wix?keyword=clickfree+automatic+backup+manual', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to 'Clickfree automatic backup manual', suggesting a lure to trick users into clicking the malicious link.

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.me/wix?keyword=clickfree+automatic+backup+manual In PDF document text
    • http://tamudeke.creativeassociationservices.com/uploads/1/3/0/7/130740433/bfd520dad0.pdfIn PDF document text
    • http://files.fisherexperience.com/uploads/1/3/1/0/131070452/tepavokinovagulixoku.pdfIn PDF document text
    • http://files.hypnotyzzer.com/uploads/1/3/1/4/131438510/defowanat-bixefivupo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/56007616502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4152/1564/files/mixubuxewato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9743/0941/files/tamubem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/49670286867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2662/3897/files/84089478599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/nerexopekixirav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0647/3886/files/89791210039.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 3

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
font_00_sfnt_off00005375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5375 5092 bytes
SHA-256: 301e769e3d9b9bd761a05921f29ab48fdad986b780c9529c31cece57abf4ad6c
font_01_sfnt_off000064a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A3 11008 bytes
SHA-256: 5041007623e26e809f55c44221c46fc0c56866a6a8e5ad222bb41c24bea08440
font_02_sfnt_off00008a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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