Malicious PDF — malware analysis report

Static analysis result for SHA-256 37159aeeb4a81b16…

MALICIOUS

PDF

37.2 KB Created: 2020-08-20 04:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3aabe9be686443a2bb9d0ca41c9ca2d8 SHA-1: f122b562640d3286dc500756d6331331290d5fad SHA-256: 37159aeeb4a81b160eff7158e16c8e8b83029c8aa24bab8ce7893a6715c91838
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a lure text "Cuddle application form" and embeds numerous links, including a critical link to a known malicious redirector at "https://ttraff.com/pify?keyword=cuddle+application+form". The file also exhibits characteristics of a link farm, with many external PDF links, suggesting an attempt to distribute malicious content or engage in SEO abuse. No scripts were extracted, but the primary malicious activity appears to be redirecting users to harmful sites.

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/pify?keyword=cuddle+application+form
    • http://files.megangrimesphotography.com/uploads/1/3/1/3/131378791/606b5d6116.pdf
    • http://files.tadaa.com.au/uploads/1/3/0/7/130776728/xusalev-fegokofujo.pdf
    • http://files.davidbuswell.com/uploads/1/3/2/7/132741169/sosipemusawa.pdf
    • http://kajegi.commercial13.com/uploads/1/3/1/6/131606490/gebazi-zukazesitikale-xubovijaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/6232/1571/files/83723774421.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/logical_reasoning_questions_and_answers_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/12532023678.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/introduction_to_chemical_reactions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3925/files/57260271919.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/berliner_platz_2_lsungen.pdf
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/84414484037.pdf
    • https://cdn.shopify.com/s/files/1/0433/4364/2773/files/97247841775.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/65179743558.pdf
    • https://cdn.shopify.com/s/files/1/0450/6284/8664/files/56943554779.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_off00005474.bin
6d0379d1082df18bb5f1ada7932de7d537147af28d83cf84499071b78cc386be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5474 5028 bytes
font_01_sfnt_off00006572.bin
dea10ac994028671f15f9b085b67f5185cbb31f76e84e6d908fbc2caf2ec9a9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 10240 bytes

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