Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cfd7f229a746e3…

MALICIOUS

PDF

83.7 KB Created: 2020-08-09 02:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3cfa2683dc7b3861b1fa0248ebe118c9 SHA-1: d287714698ab38cefa1e5b37bf4b3276a9e458ef SHA-256: 94cfd7f229a746e39a30ebcb0e287ae079827cf6dbc54c24e0b53e087d2ddc2b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting it's the primary lure. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

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=speech+writing+examples+for+class+11+pdf In PDF document text
    • http://nopeku.emmanuellezeesman.com/uploads/1/3/1/6/131606490/6083a4e6622d7.pdfIn PDF document text
    • http://files.prehistoriccollector.com/uploads/1/3/1/1/131164351/womasijin.pdfIn PDF document text
    • http://files.wmualphalambdadelta.org/uploads/1/3/0/8/130814935/7153748.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/1/0427/5827/5238/files/vufatimuzozadazezejisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/97920046252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/difference_between_centripetal_and_centrifugal_force.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/fosobas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/bloodlines_3_richelle_mead.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/petefotetav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4772/1882/files/46326549769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3785/9741/files/apgli_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/46027585702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3032/8997/files/nabefevevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/37760908024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3979/2021/files/42376987139.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000f42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42E 5884 bytes
SHA-256: ead8e943b4968ecd056e2169c0c9ab7bc6f43e39e945c9923060b8762b2960eb
font_01_sfnt_off0001082d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082D 10420 bytes
SHA-256: bfb83c8bb877b9f5aafd4de1b9c19dc61ec7734ac7687a5a7fad10be6c3c7fc4
font_02_sfnt_off00012bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF9 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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