Malicious PDF — malware analysis report

Static analysis result for SHA-256 4592f4d8140c8fed…

MALICIOUS

PDF

32.5 KB Created: 2020-08-21 21:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74640c278b340a3be91957e11466a459 SHA-1: 75ec6bf8bcfef6c39ab7b700998f81b05211cbf2 SHA-256: 4592f4d8140c8fed330d8ade002f4a265b7e0ad352102ece007a25fe44260340
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=biromes+y+servilletas+pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful site. The presence of numerous other PDF links, many hosted on unknown domains, further supports a link farm or redirection strategy. No scripts were extracted, but the embedded URLs are sufficient to infer a malicious redirection attack pattern.

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=biromes+y+servilletas+pdf In PDF document text
    • http://files.casperpecancompany.com/uploads/1/3/1/4/131414240/3e465.pdfIn PDF document text
    • http://jejabi.lataca.co.uk/uploads/1/3/1/4/131453060/9943529.pdfIn PDF document text
    • http://files.40simpleways.com/uploads/1/3/0/7/130739028/salonozama.pdfIn PDF document text
    • http://files.blackcommunityhousingservice.org/uploads/1/3/1/1/131164572/kuvunal.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/1/0435/7334/6472/files/2020_toyota_camry_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/26514293504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/62700943268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/guzetexej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/buxewugobitikiruvevif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/69028233291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/suwatefos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/89088432830.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_off0000419e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x419E 5400 bytes
SHA-256: 6ce6d0f81ffebd9e6230729ffad01d11b73cfda31ccf4fd748a62427ac33e173
font_01_sfnt_off000053ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53ED 9804 bytes
SHA-256: cbb76eea01617110e1eeffc87202867420c682c7d79a7328e416c66816c7fcae

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