Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf5146d7ce05dba…

MALICIOUS

PDF

45.7 KB Created: 2020-08-23 18:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92dad5d4adcf5f35143a722faa2ff0c1 SHA-1: c6b29547056aa5ece7f0ffd214e70a2fe634fc68 SHA-256: dcf5146d7ce05dba43ce0f71a3dc7fe96e3b96c24de3056413278ddba349f230
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a significant portion pointing to a known malicious redirector. The document body, though partially corrupted, includes the URL for the malicious redirector and references a 'crash bandicoot switch game guide', likely a lure. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious 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=crash+bandicoot+switch+game+guide
    • http://files.cyclingadventures.net/uploads/1/3/2/6/132695689/sulexovabub_bubizelogu_mekodovi_pinuvawenun.pdf
    • http://files.nomadicsteve.com/uploads/1/3/1/4/131437538/42cb4690f8.pdf
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/fijetawuzipexelifa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3762/0381/files/28619169282.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/44633086911.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/87803162134.pdf
    • https://cdn.shopify.com/s/files/1/0449/5792/5544/files/cambios_fisicos_y_psicologicos_del_adulto_mayor.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/josanu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/valedictorian_speech_ideas.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_off000067ef.bin
8682d8d3c6440935b81744137c4f235c620475cc86f71e30aa3fbf2d61949959		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 5456 bytes
font_01_sfnt_off00007a5a.bin
64dea3cd299bcc9d55c2efb5c59193e11914fd2cc42fbeacba9880f21323aa6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 9856 bytes
font_02_sfnt_off00009c3a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3A 4324 bytes

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