Malicious PDF — malware analysis report

Static analysis result for SHA-256 1892d1ab2348e2a1…

MALICIOUS

PDF

33.9 KB Created: 2020-08-01 21:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e6ef53898667e42e1c6446387bea414 SHA-1: 90afaa6c713d3e82523e00f9189c1222e847b7d4 SHA-256: 1892d1ab2348e2a1213e60eda9cb1609458e1ac18b6bb6b867db57da9fd7eb2b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links pointing to a redirector infrastructure, specifically `https://ttraff.com/pify?keyword=kenmore+elite+washer+manual+pdf`. This redirector is likely used to obscure the final destination and distribute malicious content, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The ML classifier also strongly flagged this PDF as malicious.

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=kenmore+elite+washer+manual+pdf In PDF document text
    • http://files.ofp.cosmo-ufes.org/uploads/1/3/1/4/131407547/sopamafom_fosegaruzixe_doropivarov_nedipok.pdfIn PDF document text
    • http://files.pivotaleloquence.com/uploads/1/3/1/3/131384301/1726985.pdfIn PDF document text
    • http://files.nothingtotriflewith.com/uploads/1/3/1/4/131407469/zapoxafodirapa_guvoju_fenamisabup.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/1/0429/8761/8463/files/koguwovisav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8201/5135/files/68745127885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/selekovomexitotose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/refelamewixakumekeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/84859361413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/fibexewimojib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9959313526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/fakeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/viboberukafosapula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4301/3287/files/parumamot.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
🗂 Part of campaign: cosmo-ufes.org 4 samples

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_off000045e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45E7 5344 bytes
SHA-256: 7ab79e68d0044df96632197bbe402252338b434249e8f48d4ea71abcd9019848
font_01_sfnt_off000057fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57FE 10304 bytes
SHA-256: 406302f94fe18e9aff2402b01c8eade371f688e7b2677dd8de83de5ea9b185fe

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