Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4126e1140d52d9…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 12:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a288e4e0f745c9c06b95fe2d3e4b2b47 SHA-1: 7306a1dacfafa212c95a882e91b77bc3f99cb1d2 SHA-256: 3e4126e1140d52d96b1e7c9039e9a98d1444a40e3e919cdba0b20b526bdcaff9
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as information about artificial kidney dialysis. It also functions as a link farm, pointing to numerous other PDFs, likely for SEO manipulation or to spread further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is a malicious lure.

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=artificial+kidney+dialysis+information In PDF document text
    • http://files.therealdealwyatt.com/uploads/1/3/0/7/130740242/nekisudadakid_zijovuzusuvi_zigisilow.pdfIn PDF document text
    • http://files.xiphospress.com/uploads/1/3/1/8/131871658/mewarumotip.pdfIn PDF document text
    • http://files.kurtfit.com/uploads/1/3/2/3/132303170/d91b13025a12.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/1/0428/9835/8432/files/69296453687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/cassandra_client_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/volo_s_guide_races.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/nukigavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/29809531656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/37670670949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/bodufabudunezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/35818187321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0569/6407/files/trait_de_l_argumentation.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_off000065ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 5324 bytes
SHA-256: c7af490a21dddaa22598bbbf346b4345d1b3ba819afbeb5d1e66f330002cc455
font_01_sfnt_off000077ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EE 10048 bytes
SHA-256: f87e4b0f2b7945316728859adacbf78f60625fd8c3f34f3a8c1e5dc7fb2be5e6

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