Malicious PDF — malware analysis report

Static analysis result for SHA-256 232cbf8a07172854…

MALICIOUS

PDF

47.8 KB Created: 2020-08-03 12:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75eaefbda4189e0f8c533b1de2472d9f SHA-1: e4a20952788e85dcbc42abf7c28922969b46b166 SHA-256: 232cbf8a07172854a1d1b20548f776b2df85347bfd986ba5d8420aa9368d3641
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to traff.ru. The document body, though heavily obfuscated, contains the same URL and text suggesting a lure for a free agenda. The PDF also contains a large number of embedded links, many of which point to Shopify domains, but one critical heuristic indicates these are part of a link farm. The primary malicious URL is https://ttraff.ru/pify?keyword=agenda+2020+pdf+gratis+para+imprimir, which likely serves as a gateway to further 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=agenda+2020+pdf+gratis+para+imprimir In PDF document text
    • http://zejiwusu.allysonshortle.com/uploads/1/3/0/7/130776031/dudobetukejenobedasi.pdfIn PDF document text
    • http://files.lousavage.com/uploads/1/3/2/6/132681647/niluvazokefekufa.pdfIn PDF document text
    • http://files.nlmdjs.com.au/uploads/1/3/0/9/130969183/7223856.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/1/0435/3107/5743/files/hidden_object_games_no_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/malwarebytes_2._2._0_serial_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3545/7698/files/insanity_workout_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/7105545514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/pezosipabis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/sikividunazizotivow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/terajopidagazitok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/dofuzelazololusojefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/7592205934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/sakatod.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_off0000629f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629F 5592 bytes
SHA-256: 01e731e074d178f40923b1f232c2aebd4dc608a4ff625d98f2188f0124ba45d1
font_01_sfnt_off00007595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 11368 bytes
SHA-256: 1524dc5792991b294b0cf0d1cc1f2ddf543d45150c5ecedb6bdf91aa4b0b3771
font_02_sfnt_off00009abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABF 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0