Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6399c2499e6a2bb…

MALICIOUS

PDF

61.0 KB Created: 2020-08-18 15:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 790a09fb851f2f980039e6fa1490d0ea SHA-1: bd07bb4cfeb5de61d3935733a76e11adcf2f7f4e SHA-256: c6399c2499e6a2bb94020c49b7cecab86326fad99e45b933dcec31b65cfa8da5
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=add+vectors+in+polar+form, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links pointing to various PDF files hosted on Shopify and other domains, likely as a lure.

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=add+vectors+in+polar+form In PDF document text
    • http://files.bluecactustriathlonclub.com/uploads/1/3/0/7/130775970/depekedixagonot_perojod_mubog.pdfIn PDF document text
    • http://files.getstravel.com/uploads/1/3/0/7/130739043/fujenes.pdfIn PDF document text
    • http://jojenax.rscollegesupport.org/uploads/1/3/1/6/131606490/dupatomugaveli.pdfIn PDF document text
    • http://files.hochbergbiodiversitylab.com/uploads/1/3/0/7/130776433/3a07e6f0.pdfIn PDF document text
    • http://files.cabotkennels.com/uploads/1/3/1/0/131069890/jadisi_rubumebixa_felave.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/1/0435/9464/5663/files/87415369931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29025511016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/59090516540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/75713478434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9966/files/82847656428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/12240090116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/xubegodasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5526/6454/files/zejugimovofevukewirodag.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_off00009a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A46 5352 bytes
SHA-256: 7e04f01bd7f100a5a7a2a2a82241b860458f3da68e413df959fabc33833afcd8
font_01_sfnt_off0000ac62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC62 11612 bytes
SHA-256: 15971703c978c4a75190ff1af74925c369709b3af82e0d087159214ccebff6f3
font_02_sfnt_off0000d276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD276 16072 bytes
SHA-256: 3da9309f7c28e01a20d15285b754fad9116e6eb7744d168a0fff2950d6122081

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