Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48d6c8500974414…

MALICIOUS

PDF

46.7 KB Created: 2020-08-24 09:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8972adefe6150b59eee634f85586c35e SHA-1: bde67141b86d2978402b2fe745c1054d7dfa53fc SHA-256: a48d6c8500974414621941960e4522ab1d98dc36ad627027d4796227e9a7d213
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=planta+de+tratamiento+de+lodos+activados+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Planta de tratamiento de lodos activados pdf', suggesting a lure to disguise the malicious intent.

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/pify?keyword=planta+de+tratamiento+de+lodos+activados+pdf
    • http://fukis.nycstac.org/uploads/1/3/0/8/130874359/saxirigapa_bupikej_tamil_purotelurupa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1266/8066/files/calculus_early_transcendentals_8th_edition_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/78335280423.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/17431109379.pdf
    • https://cdn.shopify.com/s/files/1/0439/2668/3816/files/mariners_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/luxixajeneb.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/wajaraxikar.pdf
    • https://cdn.shopify.com/s/files/1/0433/4200/4375/files/reported_crime_map_uk.pdf
    • https://cdn.shopify.com/s/files/1/0438/8411/8171/files/manejo_de_varices_esofagicas.pdf
    • https://cdn.shopify.com/s/files/1/0436/0214/9540/files/bosch_ve_injection_pump_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/3760/3478/files/wufitokalezujasut.pdf
    • https://cdn.shopify.com/s/files/1/0439/0433/6027/files/tejerinojiboj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25346701784.pdf
    • https://cdn.shopify.com/s/files/1/0435/0240/3750/files/constructing_equilateral_triangles_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/bosch_avantixx_dishwasher_manual.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/
    • https://cdn.shopify.com/s/files/1/0429/29

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076e4.bin
4bed5ef410097efdb4c018a842966ce3634f12622a33a92d446d7b4b645a8f37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 5364 bytes
font_01_sfnt_off0000890f.bin
c4b9e8d0e3a3b8fa6e404e40d0b5c6b2178945fe905df1325b9e94b333023376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x890F 11272 bytes

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