Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb4e9a4e8251e02…

MALICIOUS

PDF

36.2 KB Created: 2020-08-26 02:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c759f5cbf415a0b4eb28ba82310b22d8 SHA-1: 81cc6667c42d024a1a8def11db59382d1584fe94 SHA-256: adb4e9a4e8251e02a7d6c3dc983529965e716e3d6f92f0a6a93858e65e1804b7
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, contains the same lure text and URLs found in the heuristics, suggesting an attempt to disguise malicious links as legitimate study material. The ML classifier strongly indicates maliciousness.

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=cae+gold+exam+maximiser+pdf In PDF document text
    • http://pajer.magiciansofmythology.com/uploads/1/3/0/7/130740062/nunokovibanonip_nakiva_ladidigosojaxen.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/1/0430/9952/1181/files/duwile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/public_policy_making.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/97722101315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/24711366185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/lugewatunule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6521/2066/files/cangilones_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1347/0365/files/geometry_rotations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1344/6564/files/10663744206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/32130524154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/29016783259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2632/4383/files/meroda.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_off00004414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4414 5056 bytes
SHA-256: d4e741b023bd6c51a3e025db8816b811b5eb1c749217862a772559cf8d234a02
font_01_sfnt_off0000554f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x554F 9604 bytes
SHA-256: 0f726a8ae2ee5be4fa9f922036618a05711c2c2afd54f4bc3a4a47da1e5a3289
font_02_sfnt_off00007636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7636 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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