Malicious PDF — malware analysis report

Static analysis result for SHA-256 af76006fb195461c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 10:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53717e0a91818415d0a6a8a593578814 SHA-1: d7f04470ffb42f3f1818ba0987dfcbc3d3e6e968 SHA-256: af76006fb195461c7773a2a4073a9762413274b61a530606fdca4a250f8debdd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=counter+strike+go++for+android'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading potentially malicious content. The file also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to obscure the true malicious destination.

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=counter+strike+go++for+android
    • http://tabofexir.feedthehippie.com/uploads/1/3/1/4/131438013/fowanisazozani_jupawerevuxer_vusovove.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/cute_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77330784460.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/molecular_mechanism_of_cell_differentiation.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/nomurobomenoponiv.pdf
    • https://cdn.shopify.com/s/files/1/0436/6339/2921/files/medscape_copd_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/mysql_declare_variable.pdf
    • https://cdn.shopify.com/s/files/1/0437/1149/6343/files/wixegoxodejidu.pdf
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/jigikurukivefoxibewul.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/5528466259.pdf
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/39943928047.pdf
    • https://cdn.shopify.com/s/files/1/0437/3001/0273/files/16833048568.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/noxosinagotiguwur.pdf
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/jezewigedanibuxowufofo.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_off0000664e.bin
31657e8c9e9dcef60d2a91284fae3552ff5e8a950fe5042a44707d5529a946f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664E 5012 bytes
font_01_sfnt_off0000776b.bin
063a2b7b7a968458d493aff51015bd60976519ecbf64b482686ba350fa06ca6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x776B 10236 bytes

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