Malicious PDF — malware analysis report

Static analysis result for SHA-256 12080fc2804bbbe6…

MALICIOUS

PDF

48.9 KB Created: 2020-08-13 23:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52e94efe48e8a3141a3710d68fa20414 SHA-1: c2c1b5304899d415a284a6b08928bc6255d37ff3 SHA-256: 12080fc2804bbbe6f762eb834e0f831c9fe982391e50b4df17488ebf572d9dbc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including a critical redirector link to 'ttraff.ru', suggesting a phishing or malicious content distribution scheme. The presence of a large number of external PDF links, some hosted on Shopify, indicates a potential SEO manipulation or link farm tactic. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a 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=altice+one+channel+guide In PDF document text
    • http://files.auroraonfrance.com/uploads/1/3/2/3/132302764/7873119.pdfIn PDF document text
    • http://files.nicolemillersandiego.com/uploads/1/3/0/7/130775063/gesud_kukutusupapor.pdfIn PDF document text
    • http://files.mttfit.com/uploads/1/3/1/1/131163851/5867976.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/1/0430/1671/6437/files/causes_of_the_bolshevik_revolution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/koruluvila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/biochemistry_stryer_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/zulivenimozujege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/adenite_traitement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8515/files/fevuletolebinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7741/8651/files/parowikuvunaboge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/bacterial_conjugation_transformation_and_transduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5416/1310/files/55937430617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/418863468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/j_s_truck_sales_knoxville_tennessee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/fedex_airbill_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9059/8305/files/gifot.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF6 4916 bytes
SHA-256: 89e1432c2258e4e68bdcae30c4bb7441d55586fa692b2f267946b2835847b6b3
font_01_sfnt_off00006fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA2 15884 bytes
SHA-256: 8788d8cb740620252ee05ad1ba7dc388b0ce2ea72455414bb82a4db50f0994a9
font_02_sfnt_off0000a106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA106 16240 bytes
SHA-256: 281214d1119d96f3a8ebe36682ff3c94e77595198e0ed7d049f81fad77dcdf11