Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fbf6474393153ab…

MALICIOUS

PDF

42.8 KB Created: 2020-08-02 21:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac3def5b4d7c057dc9197158977e006c SHA-1: a53801b9b930cc909f129a599fb9f02346fafa4a SHA-256: 6fbf6474393153abc45e7303442957886bf1806015e1db546be3eacf37a3f96d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, suggesting a phishing or scam attempt. The document body and heuristics indicate the file is designed to present a lure for downloading other PDFs, likely to distribute malware or facilitate further phishing. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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=ready+player+one+pdf+download+free In PDF document text
    • http://files.allwaysgaragedoors.com/uploads/1/3/1/3/131398406/sivaw.pdfIn PDF document text
    • http://files.braveheartfencing.com/uploads/1/3/1/8/131871424/4999407.pdfIn PDF document text
    • http://files.nenevalleydragons.org/uploads/1/3/1/4/131438528/lijiduzulizuguk.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/1/0434/3945/6423/files/tupixonunisavinigip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6419/7273/files/skyrim_immersive_weapons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/10165420570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/14907970193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/marosozilego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/xijawefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/pamineb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3001/8210/files/generac_5500_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/xanipurixatakorito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6713/7438/files/putawesutota.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 3

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_off000052cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52CC 5060 bytes
SHA-256: 4fc28cc8858109b10038ab3cb6936fb4362e50fae82d6afd6ae947b56bd5e3c1
font_01_sfnt_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 9876 bytes
SHA-256: 0a875174c294e9218bbf14f4f351162dc2799907d9ea8143af698969a1a20289
font_02_sfnt_off00008646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8646 16472 bytes
SHA-256: e7e2497bd67eec9fc95154503aef98cece7a6c1754f96b659351b1ff5ba90698

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