Malicious PDF — malware analysis report

Static analysis result for SHA-256 598f0eea507cf61f…

MALICIOUS

PDF

48.2 KB Created: 2020-08-31 22:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ed1d6c16fafeaea7faec09fa0e52a7e SHA-1: 0e7951aa43e31c8133051c2c1548bd65eb7c0914 SHA-256: 598f0eea507cf61f7b10c791baea9ef6d13274dce6ab609e4841b157d1df91e0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a game guide, which is a common lure for phishing or malware delivery. The document also hosts a large number of links to other PDFs, likely for SEO manipulation to improve search engine ranking and visibility. The primary malicious IOC is the ttraff.cc redirector, which likely leads to a further stage of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=guide+bijoutier+dofus+touch
    • https://cdn.shopify.com/s/files/1/0432/1011/3186/files/jazz_guitar_music_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2074/files/business_budget_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/fitejologipitulemu.pdf
    • https://static.usrfiles.com/ugd/bae363_c4001738259a4bedb16238d6c5731579.pdf
    • https://static.usrfiles.com/ugd/b8c837_e92239d1f71f462a970f23ad998aaf7b.pdf
    • https://static.usrfiles.com/ugd/c8a981_54858135fc5849e2a177ed5fd3b58b62.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bed763f074f4f77a69f0cc63b80f384.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4018/files/26139585167.pdf
    • https://cdn.shopify.com/s/files/1/0436/7004/4825/files/ableitungsregeln_mit_beispielen.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/lizojirem.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_off00006018.bin
9f729aab145a6e71777716e9a766416d1921c6e703432946847bc96c07fe168d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 5116 bytes
font_01_sfnt_off00007182.bin
73e15ce3189176367d2b041b4282bbd2d83f5eae0e38d1fa62efebda5ed2e245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7182 12228 bytes
font_02_sfnt_off00009877.bin
026f7ce192b17264fef3e0cf0df01443a2fa67c22cf69b47b71675627310f598		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9877 17724 bytes

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