Malicious PDF — malware analysis report

Static analysis result for SHA-256 5432ab579c419535…

MALICIOUS

PDF

55.2 KB Created: 2020-08-22 10:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c8875206ee6bd554c613ed8f71da721 SHA-1: 7eb94cb3d9c7d4449983ba519797435356a28605 SHA-256: 5432ab579c41953594064e3540e829dd76a25afff03ef17973ce374e4bcfe761
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=landing+page+with+form+templates+free'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector. No scripts were extracted, limiting the analysis of further execution chains.

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=landing+page+with+form+templates+free
    • http://xefivu.gummystudios.com/uploads/1/3/0/8/130874063/sovipadigip.pdf
    • http://lavadukul.tidytimeservices.com/uploads/1/3/2/6/132680981/5344373.pdf
    • http://files.heartxoutfitters.com/uploads/1/3/2/8/132814593/1836685.pdf
    • http://files.taymun17.org/uploads/1/3/1/8/131857690/ad63888.pdf
    • http://mebetajim.bluethunderbirdwoman.com/uploads/1/3/0/7/130739892/ruwetezare.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/aspectos_psicologicos_del_embarazo_en_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0429/4685/5078/files/xiwuwatebilekovogoviz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/electrical_technology_by_bl_theraja_vol_2_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3223/9528/files/ciencia_de_los_materiales_dentales_phillips_completo.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/amplified_study_bible_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/67497062257.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1878/files/import_ics_to_outlook.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/56516997252.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_off0000999f.bin
76286a6bda9650955533b1abe96aad4c01292bae75307a6b9ad6737f92bf4ad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x999F 5488 bytes
font_01_sfnt_off0000ac39.bin
3ff7d3337e3c4f43d0f0b857b9cad134c710c7621d3490918a02eee766de5c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC39 10480 bytes

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