Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa9b6ab1884842b…

MALICIOUS

PDF

37.4 KB Created: 2020-09-02 15:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49033c9e0fa16f51752b8b34085c7f2e SHA-1: 5a1b053640deb4e88d205aa540d2765f967536cb SHA-256: 3fa9b6ab1884842baf9f16341f2522bd4538aef62a1d6f43b2ccda6a5dc39ce6
120 Risk Score

Malware Insights

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

The PDF file contains a malicious link disguised as a download for 'granny chapter two games mod apk'. This link, https://ttraff.com/wix?keyword=granny+chapter+two+games+mod+apk, points to a known malicious redirector. The document also contains a large number of embedded links, many of which point to benign content, suggesting a link farm or SEO poisoning tactic to increase visibility.

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.com/wix?keyword=granny+chapter+two+games+mod+apk
    • https://static.usrfiles.com/ugd/21a131_96e78c8c8de740fb9318de9fc44a2375.pdf
    • https://static.usrfiles.com/ugd/99965f_efb6ffb6ee7c44649c67aab45a69b60e.pdf
    • https://static.usrfiles.com/ugd/33a16d_c028b92546bb40bfa59dcdda4b255165.pdf
    • https://static.usrfiles.com/ugd/866690_a99c1a59fc114675a6c9956a09956d32.pdf
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/16986774099.pdf
    • https://cdn.shopify.com/s/files/1/0435/5165/4047/files/juduniliboniwixukusojiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/wajubezakanorison.pdf
    • https://cdn.shopify.com/s/files/1/0437/2758/5445/files/1254365744.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/active_and_passive_voice_examples_for_all_tenses.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/rjh30e2_transistor_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/fimowuxazuv.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_off000051c2.bin
2724660d722b6a3ecd01f9183ad7b6f3e448cceda9b64f887a1a23e8695eed8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51C2 5744 bytes
font_01_sfnt_off00006545.bin
94a0c08fa223c942e2c7e721daeb722add988f6fd9661de1646d35f3fda34ca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6545 10540 bytes

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