Malicious PDF — malware analysis report

Static analysis result for SHA-256 586ff97d168302ee…

MALICIOUS

PDF

41.0 KB Created: 2020-08-10 08:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa631c7b6abbe0156190271dad4b4a91 SHA-1: b018bfe647eb8dcfefe2b990630ca4a670fdb419 SHA-256: 586ff97d168302ee8620c1579d64827a8faec1a8399454788311f87e2046ee9e
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru' with a query related to a US visa application form. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the ultimate destination. The ML classifier strongly indicates malicious intent.

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=us+visa+application+form+pdf+format In PDF document text
    • http://files.greenvalleyvet.net/uploads/1/3/1/3/131379312/5601719.pdfIn PDF document text
    • http://files.bridgescounselingservices.com/uploads/1/3/0/8/130874125/3121761.pdfIn PDF document text
    • http://vibasel.mathessentials1.net/uploads/1/3/1/6/131636725/duxugirosokame.pdfIn PDF document text
    • http://files.alaskaascd.net/uploads/1/3/1/4/131452811/57945fbda084ac.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/1/0436/2554/5890/files/chemistry_a_molecular_approach_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1772/2280/files/17611858701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/jipuxipizarapejubolitezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7056/files/53123254179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/20085715710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/xuzojanikobukag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/musut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/jirulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/nemogejodavorowaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/autodwg_to_dwg_converter_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/62521193763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/baboroma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/digagebuzadawawawukewop.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 7

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_off000061a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 5352 bytes
SHA-256: 7b742cb4daa7de5aaa1b371db237cc728042c2c3d4db567225696a75f7fbb6a5
font_01_sfnt_off000073d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D0 10352 bytes
SHA-256: 5ae67d54cd41445d59907a58be4ff5aa0844d790272bcf0a20fa70852ae1676a

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