Malicious PDF — malware analysis report

Static analysis result for SHA-256 e996d27d389d1029…

MALICIOUS

PDF

40.9 KB Created: 2020-08-17 05:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cff9bbd16f01c626535bb11dfa4aae36 SHA-1: c1fef8846223e68a6baeb04e78a3da94c00cbec3 SHA-256: e996d27d389d1029951c398d40897ae7e8c7875f585ff74dca747649b6f50b3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though obfuscated, contains the primary redirector URL. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or phish users.

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=forma+de+contagio+giardia In PDF document text
    • http://files.mesalegria.com/uploads/1/3/1/4/131438397/naruralatedogep.pdfIn PDF document text
    • http://files.dremilyleonard.com/uploads/1/3/2/7/132740435/xoguwuwawudupigibal.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/1/0431/2740/6746/files/34443279055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/82015272462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9265/4745/files/34924011959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/cr_10_monsters_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/92994785927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/giwozawizovunajatinilalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8023/4661/files/majesty_hillsong_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/jukim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/jzyk_angielski_czasy_wiczenia_do_druku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/biblical_names_with_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/zobuvavavinomizeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/40572506313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3851/4071/files/95719095087.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 4

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_off00006281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6281 5004 bytes
SHA-256: 2b6a833784c5a3151a92a8c47a06cd02e7cf881379ed1c698b4cc36ad8e1c487
font_01_sfnt_off0000736e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736E 11028 bytes
SHA-256: 2096dcf0bd144ddd733e0c531f8fd2f088d94e96a8dce9f278ce3afbfc20f589

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