Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b03ce07752bad5…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 14:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 645c14b29b881579722b6727f1293fdc SHA-1: 4fd9f9430b83194223b01332e17fb398efa9d5d2 SHA-256: 83b03ce07752bad5f745c423258f55676fcee81956aebb9bbf8d79adb16d53d1
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a search result for 'Gta vice city helikopter ifresi', likely intended as a lure. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content widely. No scripts were extracted, but the primary malicious activity observed is the redirection to a potentially harmful URL.

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.link/wix?keyword=gta+vice+city+helikopter+%25C5%259Fifresi
    • https://static.usrfiles.com/ugd/b8c837_246c71750add42be91c1e6c780613f0a.pdf
    • https://static.usrfiles.com/ugd/529dbf_d63cdbf259be4b7eb904cd97f6a973c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_d26cb12c52a44130914d4c5577b4c534.pdf
    • https://static.usrfiles.com/ugd/defdb4_fb0dc4af73d9457caae8e4528d4ad2ad.pdf
    • https://static.usrfiles.com/ugd/e73fea_eec2c056d2b04c65a4eccdb37d9c31a7.pdf
    • https://static.usrfiles.com/ugd/ad2ade_60e6c82c9fbb41b39c58cfdfa35e0dfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a52eb78221f4fe49f00f493dab48e00.pdf
    • https://static.usrfiles.com/ugd/963627_23bceaca16994d9c87c8ef670c7e916c.pdf
    • https://static.usrfiles.com/ugd/08fe48_3e0d55cbb83a45c59b061456e58edf84.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/70935751742.pdf
    • https://cdn.shopify.com/s/files/1/0434/7228/9942/files/4751520787.pdf
    • https://static.usrfiles.com/ugd/d1c05f_14ee022a997a488b829e37c3a4a8ad94.pdf
    • https://static.usrfiles.com/ugd/b8c837_8cfe5a9e99e744bb962bd9832dc66cee.pdf
    • https://static.usrfiles.com/ugd/2e79a6_4b4e0ccecfb6408e9d1cf0114ddc1d49.pdf
    • https://static.usrfiles.com/ugd/4cf28d_91bca289dbc64063a0b21aca368bed44.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_off00006415.bin
5911bf580e9cb1fbd3f54b8a87b1c9967a3180e36ea5a3ca4c1ce988affb9db3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 5608 bytes
font_01_sfnt_off000076b7.bin
b88c1da2555fb3b5923f95956159289e6af0c12faf849681c3756d5c1dfe6f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 13448 bytes

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