Malicious PDF — malware analysis report

Static analysis result for SHA-256 864a551346854daa…

MALICIOUS

PDF

43.5 KB Created: 2020-08-17 02:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e33e5e990183b9f76f26d3b3edc307b SHA-1: ad6fcac6706f441a18ad72790c03e076120a59cf SHA-256: 864a551346854daa5c26b2507a48d1237784d86803311afe679f4a4137530669
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file contains a large number of embedded links, many of which point to a redirector URL (https://ttraff.cc/pify?keyword=coniugazione+vestire+forma+riflessiva). The document body, though heavily obfuscated, also contains this redirector URL and numerous benign-looking PDF links hosted on Shopify. This indicates a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure, likely for phishing or malware delivery.

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.cc/pify?keyword=coniugazione+vestire+forma+riflessiva In PDF document text
    • http://tefowuro.harveyrpeck.net/uploads/1/3/1/4/131407736/mebiwuso.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/1/0432/2652/9956/files/xupodepiriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/tasebilesoxubiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5572/4197/files/wiley_addiction_treatment_planner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/12987804054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/bienestar_animal_en_mataderos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/biomassa_energia_renovavel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2729/8461/files/50289338835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/electroencephalography_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/smough_s_great_hammer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57BC 5104 bytes
SHA-256: 1488725821f80b393ea4c4f31bcc19a28e5ca56d153ed5728bd9622803d5141b
font_01_sfnt_off00006914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6914 10652 bytes
SHA-256: d2648fc9395ff403f3a6389a77a809fa20138a0aaed783b0e76275906aa1325b
font_02_sfnt_off00008c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C59 16084 bytes
SHA-256: e5245523bd71a78e06ca3300da63f55ad096e28dd8c1a5e83e138be64f7d0aee

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