Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9839973e819f164…

MALICIOUS

PDF

45.0 KB Created: 2020-08-22 11:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2d8368d1ea5cc23711577c02d8c8f27 SHA-1: 34699075b1af07d73110e0511e8f256583e892e4 SHA-256: d9839973e819f164ad03646abd0152c9d3601e27a67d4575d40b0f7a37fe170e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to what appears to be a link farm hosted on Shopify, designed to obscure the ultimate destination. One of the primary links, 'https://ttraff.ru/pify?keyword=sing+shout+alleluia+pdf', is flagged as a malicious redirector. The document body itself contains obfuscated text and the URL 'https://ttraff.ru/pify?keyword=sing+shout+alleluia+pdf', suggesting the intent is to redirect users to malicious content.

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=sing+shout+alleluia+pdf In PDF document text
    • http://files.lockmangenetics.com/uploads/1/3/0/7/130775383/nizejab.pdfIn PDF document text
    • http://files.argos101media.com/uploads/1/3/2/6/132696077/xuwetus.pdfIn PDF document text
    • http://rewilul.wstcharity.com/uploads/1/3/1/6/131606295/sureme_xekoz_tufigunonoz.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/1/0428/7974/6201/files/jomat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5357/9430/files/tezefesokewakolifofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7883/4583/files/agricultural_extension_and_rural_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0723/8567/files/xevopuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/87712380552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/gitegigutiverimonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/ketumawiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/1264262209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/suxajimojepibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6402/4479/files/24591313813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/67689958011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/apostila_para_auditor_fiscal_da_receita_federal.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6555 3772 bytes
SHA-256: 9c1feca71d7d772e5a2ac2ac49eb9d5d46298dea4699e89d39fe8eb91bf8a02f
font_01_sfnt_off0000728e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 5312 bytes
SHA-256: 6051289822ef7043cd0c0fca441a08ff7128975c89b7c7012e191e6499c51983
font_02_sfnt_off00008499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8499 10000 bytes
SHA-256: 17922d1884e437f539c64fbb7dcdd03c3d3b88994cc946427908041e63175ff6