Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6f6cc436117bc7…

MALICIOUS

PDF

54.3 KB Created: 2020-08-27 23:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 670c2ea46eda790c4c3008fa5b8b8479 SHA-1: 89a4d7251e24ab45753910f6ef3872c86abd8e7b SHA-256: ee6f6cc436117bc70f46e7467bc8ac533357525e93b176fed031215bc4577b36
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=vlastn%25C3%25A9+cobra+tetovanie'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0429/7415/0809/files/transformer_voltage_vector_diagram.pdf'. The document body is heavily obfuscated but contains the redirector URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=vlastn%25C3%25A9+cobra+tetovanie In PDF document text
    • http://files.c3churchnorthcity.com/uploads/1/3/1/3/131380345/nezofakup.pdfIn PDF document text
    • http://files.bigtrecreation.com/uploads/1/3/1/6/131606537/1857207.pdfIn PDF document text
    • http://kapavomaj.annensor.com/uploads/1/3/0/8/130814851/70af12e30f1.pdfIn PDF document text
    • http://bazeze.constableradio.org/uploads/1/3/1/4/131407406/519f83f385f780.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/1/0429/7415/0809/files/transformer_voltage_vector_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/free_download_small_to_word_conversion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/43627157672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9041/8591/files/12430829609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/vujimepagulogejewox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/92778430245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/54502598262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/55101878495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/airline_ticket_reservation_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5277/7118/files/public_relation_officer_duties_and_responsibilities_in_hospital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8448/files/73624331926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/sepinejexevapupanipilag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/morowejigilinomajomaka.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_off00007cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBC 5100 bytes
SHA-256: 98337a7d6113bf92f94edee5b75a9a45097af371ca8e2edc77a781fe604da104
font_01_sfnt_off00008dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 12444 bytes
SHA-256: 6f0b7dca2f001884b14f19f280bb5b7f04e61f98f4720f37991127ae80ffd712
font_02_sfnt_off0000b42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB42D 16376 bytes
SHA-256: c3d0ee408bee49a88931d2ac630a9fb52e88a46fabab5a72aa19e78bbe1d3826