Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2f1baf49e659ac…

MALICIOUS

PDF

46.1 KB Created: 2020-08-20 23:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94361ed2f84b53747c41679ecb5d1638 SHA-1: 87588777a381fb29f2ecbf98a4b33e2102213179 SHA-256: 4a2f1baf49e659ac5eb2c5fb349b737de168863a9cc58da094d99c114e674498
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=black+spiderman+colouring+sheet', which is also listed as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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.ru/pify?keyword=black+spiderman+colouring+sheet
    • http://files.thewhitehart-bishopstone.co.uk/uploads/1/3/0/7/130739864/4707065.pdf
    • http://padisuzu.fotip.org/uploads/1/3/1/4/131407067/ac6e1d14569.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/fejifetid.pdf
    • https://cdn.shopify.com/s/files/1/0433/9082/8700/files/vosisunazuxabeguxopebiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/git_reset_remote_origin.pdf
    • https://cdn.shopify.com/s/files/1/0438/3444/1890/files/fuzupizupozapoga.pdf
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/puwegofudorotoxibifenived.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0439/files/pdf_split_software_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/kakelezegobigobepawowinu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/weight_lifting_routine.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/kemofowimavixaregiteta.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_off00007665.bin
b63097dc0405048b7cb69ac6981b3a3839675910dce10206995fd078db06e9ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 5600 bytes
font_01_sfnt_off00008944.bin
dec9e4c54dce87410627cf7603f35ca7e333c635ba9a7ce245c3e786930246a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8944 10152 bytes

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