Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d664df7b396efc7…

MALICIOUS

PDF

36.9 KB Created: 2020-08-17 15:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d19341ace3f9f33bd582557c1a9a4e4f SHA-1: d3129e947f7e8ee7570285611f7e037f4b2084b1 SHA-256: 9d664df7b396efc7b461318669c1e6001d4cb24093647dcfd708705590279efe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and redirects to known malicious infrastructure, indicating a phishing or scam attempt. The embedded URL `https://ttraff.ru/pify?keyword=software+calcolo+codice+fiscale+gratis` is a critical finding, suggesting the document is part of an SEO poisoning or free download lure. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead the user to a compromised site or further malware.

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.ru/pify?keyword=software+calcolo+codice+fiscale+gratis In PDF document text
    • http://files.hirzelinteriors.com/uploads/1/3/2/6/132681783/junugikozetave_wudulatabemeba_teparolos_gevijobugudut.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/1/0428/9835/8432/files/wexanenivoxepabulolud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/81012706563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/minecraft_pig_simulator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/anemia_minsal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7388/files/fotupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/critical_thinking_worksheets_for_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6629/3401/files/80018914877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/26668250518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/pathophysiology_of_perinatal_asphyxia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/27497703153.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 3

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_off0000508b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x508B 5384 bytes
SHA-256: 720cb9e486c01ccb871b1a965c231ea8f8c5b9c60ee841af57f2a56b3c320f24
font_01_sfnt_off000062ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62ED 10580 bytes
SHA-256: 5e0266c5fc33c751866729483424e48305d1cb1fff0a5a34e39179aedbdc5cf9

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