Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6aa168550b79eb6…

MALICIOUS

PDF

46.3 KB Created: 2020-07-30 08:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a58ebc8f520c4ff84940c933de5b403f SHA-1: ab307d4ccd8c15b745a5ef8d142d414cea9d2bed SHA-256: e6aa168550b79eb6e35dfaddb5f53debc3e26b446a0a8fa629593887e899422b
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. The heuristic PDF_SEO_LINK_FARM indicates a link farm, and PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '2020 hindu calendar pdf south africa', suggesting a lure to attract users to click on the malicious links.

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.ru/pify?keyword=2020+hindu+calendar+pdf+south+africa
    • http://files.threeatlantacats.com/uploads/1/3/2/7/132740307/vifomolegoxaka.pdf
    • http://files.elliseffect.com/uploads/1/3/1/4/131482884/pulevexo.pdf
    • http://files.centerforspiritualawakening.org/uploads/1/3/0/7/130775231/repilogigura_kelidofafalovo_gadenedaloviv_luvebu.pdf
    • http://files.centerforspiritualawakening.org/upload
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/41683962008.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3571/files/neletozawagonijajukipi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0081/4998/files/31251468375.pdf
    • https://cdn.shopify.com/s/files/1/0434/1003/0759/files/benetiwademejofejin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/kemokalerosemevogobuwej.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2415/files/ratudatisivofiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/dexozenorezole.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/20510652570.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikoleluvotejagumali.pdf
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/55483648498.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/ponapazum.pdf
    • https://cdn.shopify.com/s/files/1/0435/5630/7107/files/65869092368.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d18.bin
255ec052d8938bdce2077ce02f2bc17afd22e6c8df7b14706b2cc181dfa90f70
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D18 5304 bytes
font_01_sfnt_off00007ef9.bin
a511fb262e2f240b0cc62b800179189f1c69c7b4d67d938f9bc0c5e12ef74554
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF9 2024 bytes
font_02_sfnt_off0000888e.bin
0d0c855d053f70d21ad3aa0e5fc26366fe2bcfbc8bc5904c6b9acc82e3ca5dad
pdf-font-stream PDF embedded font (sfnt) at offset 0x888E 10504 bytes