Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b09e248b8bf028e…

MALICIOUS

PDF

42.4 KB Created: 2020-08-04 21:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e15c8789fc11ac8b3ddc5e029938910 SHA-1: fb6b3080a20cfa3f99af9241c6418b3399699647 SHA-256: 1b09e248b8bf028ee5fd4a9f209476f607ec437a14fb8934c0f9136d32a70de4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, https://ttraff.com/pify?keyword=coronary+anatomy+pdf, is known to redirect to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be malformed or obfuscated, but the presence of the malicious redirector URL is the primary indicator of malicious intent.

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=coronary+anatomy+pdf In PDF document text
    • http://files.hollandsofficeproducts.com/uploads/1/3/2/6/132681826/ziruzozedugo.pdfIn PDF document text
    • http://valatafa.uttersurrender.com/uploads/1/3/1/4/131453278/9405842.pdfIn PDF document text
    • http://files.moreeshowsociety.org/uploads/1/3/1/3/131379396/difomovuzox.pdfIn PDF document text
    • http://files.irwinquagmirewart.com/uploads/1/3/1/6/131606874/c8e7ae790.pdfIn PDF document text
    • http://files.llanfairps.com/uploads/1/3/1/4/131453215/xivejotasisozaluxo.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/1/0440/6591/5032/files/vibuvavobumibixikej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/sezil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8282/files/tikaziwuzupiduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/79742961816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/navojijuderakazeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5354/5632/files/wajobuzuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/3243795253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1072/6815/files/duvasigoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/gegazasolafesuxubibofat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/23047669559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/fifewakoralebufuzazok.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 7

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_off000068d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D4 4984 bytes
SHA-256: 3df9c9392073c6d656ca9204d4b006908709a073f37452a74d3cefa92e1c31c6
font_01_sfnt_off000079b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B9 10184 bytes
SHA-256: 9742e8b6978dcd298fb14628642c3d324c90f460592e251f85605799ed526336

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