Malicious PDF — malware analysis report

Static analysis result for SHA-256 b93fbbd8059b1e2a…

MALICIOUS

PDF

33.3 KB Created: 2020-08-05 03:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 011edad77d9f6305a772a443e1a9853a SHA-1: 93ad680bc4068b93667284adb042489e55fa2bc8 SHA-256: b93fbbd8059b1e2a5238ef02daa39ffa516b02aacd172920212d3c4015930b97
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary malicious URL being a redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=louise%20l%20hay%20sana%20tu%20cuerpo%20pdf%20gratis', which is flagged as malicious. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/wb?keyword=louise%20l%20hay%20sana%20tu%20cuerpo%20pdf%20gratis
    • http://files.michaelbrownslawoffice.com/uploads/1/3/1/4/131406762/xajixolaxexojobegu.pdf
    • http://files.momnovel.com/uploads/1/3/1/4/131482958/3656597.pdf
    • http://files.tritongymwear.com/uploads/1/3/1/3/131379540/facc406.pdf
    • https://cdn.shopify.com/s/files/1/0428/9521/2697/files/42996354768.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/12860618107.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/53259770450.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/pojazajijilijabodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/absolutely_on_music.pdf
    • https://cdn.shopify.com/s/files/1/0439/4962/1406/files/adhesion_testing_methods.pdf
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/pabalefamavifun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/python_dbf_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0435/5696/2465/files/classical_guitar_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/35971819068.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_off00004280.bin
c756b2ff33b238fbfe676bd04355eb29b3ba7d4324a0ed86fb9a706eee7dd6f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4280 5460 bytes
font_01_sfnt_off0000551c.bin
c96c13f3fd53f41ee8edfd2228baed592cb26ea48028b7414f554a2e357dda18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x551C 10220 bytes

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