Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4eab2a7729b3341…

MALICIOUS

PDF

44.9 KB Created: 2020-07-29 21:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4120b63f2ee8a444c5fc8124f47fd1b2 SHA-1: 6d1a3b44d46e2bcfd7af085572a6d3d387dc7c5e SHA-256: c4eab2a7729b33413aa6ace33257088bfead5ddc1bb506c36ad38b850e49834f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that this URL is associated with malicious activity. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a large number of external links, many hosted on Shopify, which are likely used to obscure the malicious destination. The document body is heavily obfuscated and does not provide clear textual lures.

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.ru/pify?keyword=aseptic+processing+of+food+pdf In PDF document text
    • http://files.phi966.org/uploads/1/3/1/1/131163563/ce077d2b8.pdfIn PDF document text
    • http://files.jhslearningcommons.org/uploads/1/3/2/6/132695714/japututaxog.pdfIn PDF document text
    • http://files.newleaforganizingllc.com/uploads/1/3/1/8/131857071/6418065.pdfIn PDF document text
    • http://files.dunlapsrestaurant.com/uploads/1/3/1/3/131379832/bineno_fodos.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/1/0432/9802/9733/files/zukokubepim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/mesigujedoxabejolidaviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/nevewenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3774/4552/files/senodapalediruwek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/wazawerapofogowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nipexaledova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/81795769793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/zomojutusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/fipem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/mojovafuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/28921210218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/7547189725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8511/0171/files/91324105337.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_off000071fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FB 4856 bytes
SHA-256: cf4aeacadab8221c0bc6919fdc71d764be555702b79f0fa19bc41f190ba0bfaa
font_01_sfnt_off00008289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8289 10480 bytes
SHA-256: 0833e0b35e18f85dbfc3247582d8ba79fdf51ebd87d72b82092438f03c2b71d7

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