Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e85fe5bb1ed298…

MALICIOUS

PDF

40.1 KB Created: 2020-08-12 08:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556927a96908bf78649cf9e194fcaeb8 SHA-1: 7156a3b552ca6462f0ee1d95e3c2d5002b0992f9 SHA-256: 03e85fe5bb1ed2986ffd2236b631c2c53494a5707a63e4eb731932b205a45485
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify-hosted PDF files, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.ru/pify?keyword=fusionner+deux+fichiers+pdf+avec+adobe+reader', is identified as a malicious redirector. The document's content and structure strongly indicate a phishing or malicious redirection attempt, likely to deliver a secondary payload or lead the user to a scam page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=fusionner+deux+fichiers+pdf+avec+adobe+reader
    • http://files.mollybrennan.org/uploads/1/3/0/9/130969172/7312687.pdf
    • http://zofigan.debbieandriullidesigns.com/uploads/1/3/1/4/131453541/3003069.pdf
    • http://files.michaeljacksonsoulwarrior.com/uploads/1/3/0/8/130814208/kaxojexijutepu.pdf
    • http://files.cleanandleanmixes.net/uploads/1/3/0/7/130739542/842a531.pdf
    • http://xulasig.kathleenhebertartist.com/uploads/1/3/2/7/132710714/1a6971fd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6876/5861/files/lejurelafejuzej.pdf
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/silajetudapatoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/bifukezeguraxave.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/polonafebomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3172/4183/files/92560597346.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/lopesorowuwis.pdf
    • https://cdn.shopify.com/s/files/1/0447/5944/9749/files/acid_base_equilibrium_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/lasor.pdf
    • https://cdn.shopify.com/s/files/1/0447/9136/5792/files/smart_learning_objectives.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/wodasudadamubol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c7c.bin
5cc4de78e813260c3cbcd8d85066a11eb08944e58e17afa25559d2bab7f7fb8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7C 5432 bytes
font_01_sfnt_off00006ef3.bin
78309944b7a9cde4c80ae3cd0ef85824ebc3761a25a68c83ab77ddc0fde292bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF3 11400 bytes

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