Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea51afc5ffc33ea6…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 23:11:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9400f52a3e38d521a4bbec8b55320624 SHA-1: 0f73a0f552dfbf01b309da0cb25f174f737e0ac5 SHA-256: ea51afc5ffc33ea6ce6b4f6077a4aabaa14f16ccd9e0c1919719ef902b902e76
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, including a critical redirector link to 'ttraff.cc'. The document body, though partially corrupted, mentions 'Cookbook template pages' and includes the malicious URL, suggesting a social engineering lure. The presence of a link farm heuristic further indicates malicious intent to drive traffic to external sites.

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=cookbook+template+pages In PDF document text
    • http://piboz.peakelectricbikes.com/uploads/1/3/1/3/131398091/megaxipexupiluba.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/1/0430/2117/2897/files/39695050846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/13619498064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/buyers_guide_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/kirojifidazubujene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8036/7780/files/77433886861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/nacionalidades_en_aleman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/preparing_for_marriage_dennis_rainey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/62401999945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/jupodelexojipuvomozu.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 1

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_off00005cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD5 4904 bytes
SHA-256: 2cd03187656cc24945ed1e56f37eb32e67bdd9b6bcfd0b6fc7778f36c49e29e6
font_01_sfnt_off00006d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8F 10180 bytes
SHA-256: 66debc98a66d66379f0f8e958b1477d86ec544711e415135c7e5b3b8988a75e8
font_02_sfnt_off00009071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9071 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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