Malicious PDF — malware analysis report

Static analysis result for SHA-256 d888cf4452a4493c…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 10:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb667f17eadc25f551fe4ecd921cbc06 SHA-1: 00ac562f0db8c3b32f87440a88267e9c12e17604 SHA-256: d888cf4452a4493cbad55d576a8695b63e5270ffc78958b80a6b17b6e421bd00
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a link farm pointing to numerous external PDFs, with the primary redirector URL being https://ttraff.com/pify?keyword=equidade+de+genero+pdf. The document body contains garbled text but includes the same URLs, suggesting a lure to entice users to click on the malicious link. No scripts were extracted, and the family is unknown.

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=equidade+de+genero+pdf In PDF document text
    • http://files.annehuthartist.com/uploads/1/3/1/4/131413905/589715.pdfIn PDF document text
    • http://files.historicinterpretations.org/uploads/1/3/1/4/131438616/9471349.pdfIn PDF document text
    • http://dosopira.whipcityshields.com/uploads/1/3/1/6/131636855/7977272.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/1/0432/2122/1539/files/occupational_therapy_and_neurological_conditions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/92020049611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3696/6055/files/45096429957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/9214623420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/fisipafidizitufutulanovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/nojaxorigemajusaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8485/8022/files/waiting_for_godot_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/mikorumefonowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/69622295300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8885/files/folirali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/62890695939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/17111983200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8790/5446/files/mopomuvixojojuda.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 2

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_off00006f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F54 5080 bytes
SHA-256: 2594024c38f9dfb41f44cc509a56c92f62bf75c9122ced84c2ab657dd3915564
font_01_sfnt_off000080a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A4 11768 bytes
SHA-256: bc8b67e9daf047f7b45e5b60e4422a9d72a3551d92cf670716e0e94cabcd62de

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