Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0429b80a528f18…

MALICIOUS

PDF

59.5 KB Created: 2020-08-30 19:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e98e90fd7ce08531d4aead453b7f341f SHA-1: ad0d38657e9dc2f756de17b12885ae9ae71c2b1e SHA-256: aa0429b80a528f18b048ade97d6e0eb4e736df877278a6b73368ebd6dff82160
142 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.com/wix?keyword=split+sheet+template'. The document body, though partially corrupted, suggests a lure related to a 'split sheet template'. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy. The heuristic 'SE_CALLBACK_LURE' further suggests a potential callback phishing or tech-support scam context.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wix?keyword=split+sheet+template
    • https://cdn.shopify.com/s/files/1/0437/8470/0055/files/kilela.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/guzumaxibedekowujij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdf
    • https://static.usrfiles.com/ugd/b77b08_9b1946a292084d2bb1cb73885e8388ef.pdf
    • https://static.usrfiles.com/ugd/0511f5_5841b0d70c67477ea3f086d6e7d84680.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe9d8082320a4ceab11390cfd2e64385.pdf
    • https://static.usrfiles.com/ugd/8ab72e_7379ca5522144f7083f10550123ca3f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_89ad23fa5c5d4c0ca8e745aeb109c8d4.pdf
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/zapufutekebisirojorela.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/26665036600.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094ef.bin
fb35683020da73fdb1a162d10a9f6158610dbc118c377309382d856764973a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94EF 5068 bytes
font_01_sfnt_off0000a609.bin
5bc01d7ada0b860e8d4b85eb25e5b3041c46f6104b31eb4147ccfca27841cf62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA609 11100 bytes
font_02_sfnt_off0000cc16.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC16 16312 bytes

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