Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0497af652c6ecae…

MALICIOUS

PDF

81.0 KB Created: 2020-08-06 18:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea74101badb68ac8951b41a68e0aa8e8 SHA-1: 54e17a585d82cae3a6008a04948f00216558e7a1 SHA-256: e0497af652c6ecaeb5e46a75f78c978e3fe0c323c9558403aed72069509deef7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic suggests this is part of a larger campaign to generate traffic through numerous linked PDFs. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=metro+map+madrid+spain+pdf', is the primary indicator of malicious intent, likely serving as a lure for further compromise.

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=metro+map+madrid+spain+pdf
    • http://files.esibstudentsfront.com/uploads/1/3/1/4/131482919/niwasovuv_mafub_legokulavagid.pdf
    • http://files.beautykonstanz.com/uploads/1/3/0/7/130775828/suximilep_wajatazukag_pabinazipobem.pdf
    • http://files.myblessedpath.com/uploads/1/3/1/4/131407164/xoxetirufutewaxokap.pdf
    • http://files.victorybaptist-wf.org/uploads/1/3/1/4/131454521/pakatojetuvupedul.pdf
    • http://files.oknooshoon.org/uploads/1/3/2/7/132740619/1586816.pdf
    • http://files.oknooshoon.org/uploads/
    • https://cdn.shopify.com/s/files/1/0428/6588/5351/files/65735267343.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/46166698651.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/buliwobad.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/tebenanujetawubobinibumaj.pdf
    • https://cdn.shopify.com/s/files/1/0448/0948/6498/files/ambient_advertising.pdf
    • https://cdn.shopify.com/s/files/1/0429/2293/4435/files/kopiwogesaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/34604310920.pdf
    • https://cdn.shopify.com/s/files/1/0428/6231/3631/files/lugosij.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/90199310020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/6102019464.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/99685081431.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faa9.bin
c193998160c00aba4be49937cc69e478160ae10e292de591f3cec8b2b8ef01c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA9 5160 bytes
font_01_sfnt_off00010c24.bin
a43bf9639b5e8f652480b45cad0d5e9011c83e7682a334cf0a8d8bfee3ab7e69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C24 13456 bytes

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