Malicious PDF — malware analysis report

Static analysis result for SHA-256 908bd82641ff8a02…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 21:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92ce05f10123d9c2b1a03db2c8e433ba SHA-1: 36bafe653e4044d7c3bd6c9f6264ab0010d463c7 SHA-256: 908bd82641ff8a02609254b8101563fc2d274b3ca74a961a5c36d5c318d398b2
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though obfuscated, contains text related to a 'Kellogg company annual report 2018', suggesting a lure. The PDF also contains a link farm, with many external PDF links, some of which point to potentially malicious domains.

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=kellogg+company+annual+report+2018
    • http://ziwikosov.actingonfaith.org/uploads/1/3/2/6/132681482/bd032f030f.pdf
    • http://files.aj-flower.com/uploads/1/3/0/9/130969481/4313506.pdf
    • http://files.plpthumanresources.org/uploads/1/3/1/4/131407135/04d0a0.pdf
    • https://cdn.shopify.com/s/files/1/0431/9562/9725/files/japev.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/squinty_eye_meme.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/84841074709.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5153/files/8047140408.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27588499931.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/53324008443.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/writing_task_1_general_ielts.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/lopesulivekimifipota.pdf
    • https://cdn.shopify.com/s/files/1/0436/1158/6722/files/40297627850.pdf
    • https://cdn.shopify.com/s/files/1/0433/0323/9840/files/ranuvuvijerajamiwebaxewa.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_off00005c33.bin
dbf18434b66398e743eee85e54120f17dd2058de07b42f6fc92d4a72ee54a43c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 5500 bytes
font_01_sfnt_off00006ee6.bin
f0b2f355fe72b9e33c2dfce778f378ebe5dd9fe514794f1a38102429771a479b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE6 10552 bytes
font_02_sfnt_off000092d4.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92D4 4324 bytes

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