Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa8f3ac892e4a6b…

MALICIOUS

PDF

34.1 KB Created: 2020-08-18 21:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84bb8cb9234fecf2f3db49502f190819 SHA-1: 76f678d128ccb40e4152775cfe15dbb20082d418 SHA-256: 1aa8f3ac892e4a6b10904c14b3d9f8f07b8a82e7b40b681627ca0f3aa64021ee
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing '9th wonder drum kit' and includes the primary malicious URL. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is https://ttraff.ru/pify?keyword=9th+wonder+drum+kit.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=9th+wonder+drum+kit
    • http://files.twinflamepsychic1111.com/uploads/1/3/1/1/131163833/jizuwefifevadem.pdf
    • http://wijasoled.roadslaves.com/uploads/1/3/0/8/130874064/6636522.pdf
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/addition_with_carry_over_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/91041625948.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/durojipun.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/lupigokajo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/5029180931.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/41595752036.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/how_to_turn_off_avast_popups.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/gadejikaguteka.pdf
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/lovoxizovevudinexi.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_off00004922.bin
0a289e80cb72571f7ca4d0a466fa1456ed67901ca78c2413b53fc9f691bf261d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4922 4864 bytes
font_01_sfnt_off00005984.bin
6b14d8c235935ac93e39a2955199acb29ed8e2a6ea14cfec5b644960c382e257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5984 10144 bytes

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