Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bbe53e1507672c…

MALICIOUS

PDF

51.5 KB Created: 2020-08-12 23:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85013811ef1ee7f6e897f4070ce06d3d SHA-1: 677c13cfbd674d99c9caa289d7f30c01775603b9 SHA-256: d3bbe53e1507672cd3d8f32e8fff4d668a8de05b475ac04ac4c1322a75e11582
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=side+by+side+bilingual+books+spanish+english+pdf'. Additionally, another critical heuristic indicates a PDF link farm, with the primary link being 'https://cdn.shopify.com/s/files/1/0434/7301/0845/files/sukixewafulel.pdf'. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect users to potentially harmful content.

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.ru/pify?keyword=side+by+side+bilingual+books+spanish+english+pdf
    • http://files.jwhitneyart.com/uploads/1/3/2/3/132303151/jixuzizew_zofupefopusut_rujodeg.pdf
    • http://files.consciouslyawarehealing.com/uploads/1/3/1/3/131381363/3777304.pdf
    • http://files.colettebeardall.com/uploads/1/3/1/4/131454012/vepaxofimowe_wodenepuba_wobikeguka.pdf
    • http://files.consciouslyawarehealing.com/uploads/1/3/1/3/131381363/377
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/sukixewafulel.pdf
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/popozilosadagerum.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/bizomadezusufipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/74627543088.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/jibovigafafeponarobofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/the_rise_of_nationalism_in_europe_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1452/0995/files/94420574363.pdf
    • https://cdn.shopify.com/s/files/1/0438/1632/1184/files/226546020.pdf
    • https://cdn.shopify.com/s/files/1/0435/6525/2771/files/mesenteric_lymphadenitis_in_child.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/apply_at_starbucks.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_off00008a34.bin
294494371360d042d5b99ddaecc801ee531b8d1b26492c49a6572d7ab1d1d311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 5616 bytes
font_01_sfnt_off00009d51.bin
e0418af536be5c63d72edce2e1584c7f6d4f7946373e7257c26d4dba9dc6aefa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D51 10332 bytes

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