Malicious PDF — malware analysis report

Static analysis result for SHA-256 7efaa9bc22813135…

MALICIOUS

PDF

37.5 KB Created: 2020-08-17 10:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a83ac2d16f5e077de98edce33bb7cd6 SHA-1: 4aad8910f8f7134e1e90afdf7a72929213c11a5f SHA-256: 7efaa9bc2281313591f0cbd937ca87dcf9865465984dc3569b4cba097c59a0d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=i+am+an+albatross+song++320kbps'. Additionally, a high-severity heuristic indicates a 'Browser extension / update installation lure', suggesting social engineering to trick the user into installing malicious software. The document body, though heavily obfuscated, contains references to URLs, including the malicious redirector and a Shopify URL which is part of a link farm.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=i+am+an+albatross+song++320kbps
    • http://files.ahnorthodontics.com/uploads/1/3/1/3/131383657/1631433.pdf
    • http://files.detailersdirect.co.uk/uploads/1/3/2/8/132815785/dinaxotegosokelumabu.pdf
    • http://tunowox.toymigos.com/uploads/1/3/1/4/131483109/7358136.pdf
    • http://files.communityproblemsolvingday.com/uploads/1/3/2/8/132814071/nokigusoto.pdf
    • http://tavofukix.rachelflynn-art.com/uploads/1/3/1/6/131637136/dca03c0383.pdf
    • http://viltipenpu.datingvr.ru/?dl&keyword=download+i+am+an+albatraoz+mp3+320kbps&a
    • http://viltipenpu.datingvr.ru/?dl&keyword=download+i+am+an+albatraoz+mp3+320kbps&a
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/bikini_body_guide_2.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4686/files/telugu_letters_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/heavy_wool_bandage_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/21216262914.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/72552312613.pdf
    • https://cdn.shopify.com/s/files/1/0434/5066/3062/files/medobalifonomevofolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/cardiovascular_endurance_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/9080/4893/files/pdf_max_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/86301086381.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5833/files/mezapizivoduvipenanog.pdf
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/27366237350.pdf
    • https://cdn.shopify.com/s/files/1/0434/2913/4501/files/32682477500.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_off00005401.bin
5f1fc22ca506503212a95edb1f2426f7f67d4f7d42f056ff83303575db600dfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5401 5720 bytes
font_01_sfnt_off0000675a.bin
464092d6829d9118e6eb688d33b9b16a95ddb50e36789cc218d55a1231901e08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675A 9904 bytes

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