Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e287c8ac32c9ef1…

MALICIOUS

PDF

41.4 KB Created: 2020-09-05 20:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d3a238e52b3136a2a2d94c9a467aa7a SHA-1: 6ed52907ccadc384389c85c599e56944b6b41757 SHA-256: 1e287c8ac32c9ef19724ae59fd0646a4639bf6b3bfcb302c1af19bb20c1a08e2
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=usatestprep+crossword+puzzle+answers'. The document body, though heavily obfuscated, contains text related to 'usatestprep crossword puzzle answers' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The file also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content.

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.me/wix?keyword=usatestprep+crossword+puzzle+answers
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/22224595896.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/biriyani_mississippi_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/fowiwekonosu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/morewipozul.pdf
    • https://cdn.shopify.com/s/files/1/0437/7034/7677/files/vomitivigek.pdf
    • https://static.usrfiles.com/ugd/f34323_a9dc40ae8a554c658da9545c3669ff3d.pdf
    • https://static.usrfiles.com/ugd/800b88_f6aaffd1bf4d4f2ea6c1d34474408e3b.pdf
    • https://static.usrfiles.com/ugd/3c2969_1dbbe24c5741415cbd478edff6099dce.pdf
    • https://static.usrfiles.com/ugd/2eedf1_d9a0573f9a3d48ce8d9c0318c0573045.pdf
    • https://static.usrfiles.com/ugd/9e41f0_1dc8bca260e94b2ab62b9a2809607cb3.pdf
    • https://static.usrfiles.com/ugd/eda9ba_74aae52139d349e9913a87be095b06db.pdf
    • https://static.usrfiles.com/ugd/cfa91a_32b75ab3b1aa4dc5928139871d67f08c.pdf
    • https://cdn.shopify.com/s/files/1/0462/3033/9735/files/wepadukizikafen.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/cuddledown_jersey_sheets.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_off00006119.bin
d913643baac20fa181a012bdfc667329c9c8652ab510bbe85d4f8960b859c97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 5200 bytes
font_01_sfnt_off000072f5.bin
17b412bcc5abbf34e08f706464ffb49a9002a1d062ec2610bc6389c2aaf85322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 11440 bytes

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