Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0fe851f56807a28…

MALICIOUS

PDF

55.7 KB Created: 2020-08-24 06:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bcb0b502f0d9162937b50bfb09a786c SHA-1: 73176503a56a28b4da513281f4d487142c8d0a39 SHA-256: b0fe851f56807a28befb534ad83841a99f730ce9480c25a1a659de01bab4daaa
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, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs. The primary malicious URL is https://ttraff.cc/pify?keyword=antisepsia+intestinal+pdf, which likely serves as a lure to a malicious site.

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=antisepsia+intestinal+pdf
    • http://majefijus.thesprightlymovement.com/uploads/1/3/1/1/131163846/xikiborakoxufi.pdf
    • http://files.melitaharvey.com/uploads/1/3/1/1/131164081/xaxuzizi_xipufuvevezona_zoravojon.pdf
    • http://files.productionsbymk.com/uploads/1/3/1/3/131383760/mogixetizotomevigut.pdf
    • http://files.thewaveindustries.com/uploads/1/3/1/4/131413837/a1b902b2.pdf
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/approaches_to_the_study_of_political_science_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/3080/4637/files/jcps_school_calendar_2016.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7311/files/suseganaxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8845/2515/files/kagasagen.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/home_interior_design_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/lanif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/20999421854.pdf
    • https://cdn.shopify.com/s/files/1/0428/3252/7526/files/walmart_sheets_twin_xl.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/wiwivudijuwuwigijap.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_off00009df5.bin
f89452ab35de7b8a4601040b39aaa071392e3f05dfe0a621b62099d45b9a9b09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF5 4928 bytes
font_01_sfnt_off0000aec8.bin
ad81fd436af01b4e2a6fbd3a0aacff77d64ea29077161f92bded3aef1dd5d62d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC8 10388 bytes

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