Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac6beb8f57ecbb5…

MALICIOUS

PDF

43.8 KB Created: 2020-08-13 13:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d590be50732cc2e2e7b10bdfbfd4c2d7 SHA-1: ec47a9cf58d7f859f14f4ad2d115295846c6974a SHA-256: 7ac6beb8f57ecbb501cba47a0d89485ba237d36007e80a141e01c5879b629bb7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to SEO redirectors like 'ttraff.com'. These redirectors are used to funnel users towards potentially malicious downloads, disguised as legitimate documents. The ML classifier strongly indicated maliciousness, and the presence of multiple external links suggests a link farm or phishing attempt.

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.com/wb?keyword=atlas%20of%20veterinary%20hematology%20pdf In PDF document text
    • http://files.thetracegrill.com/uploads/1/3/2/6/132682758/96512311a.pdfIn PDF document text
    • http://files.kilgorecustomtattoo.com/uploads/1/3/0/9/130968942/rawudulukojonajolivo.pdfIn PDF document text
    • http://files.hmonghistorycenter.org/uploads/1/3/0/8/130873851/labuniponunikefa.pdfIn PDF document text
    • http://files.cdc-design.net/uploads/1/3/0/8/130813841/7705062.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/genie_garage_door_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/1423/8887/files/1131881442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/crack_abbyy_transformer_3._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/67346584844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/49516124495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/constituio_do_estado_de_alagoas_atualizada_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/causes_of_the_civil_war_webquest_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3218/1909/files/social_psychology_kassin_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/vegesolek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/57511902583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1379/9066/files/zulotopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5365/2895/files/microsoft_sql_server_management_studio_2020_r2_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/zakinod.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_off00005f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F73 5396 bytes
SHA-256: 592850fd6676769dce1c175eafee5f704b215bfec52f261c5554e7417d93c8a5
font_01_sfnt_off000071a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A9 10260 bytes
SHA-256: 6efebc1f100aecb1d768430192559d771a8d0a9a8bc2e930efe38deb26655945
font_02_sfnt_off00009407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9407 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f