Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d70106ada498336…

MALICIOUS

PDF

47.4 KB Created: 2020-09-01 04:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83a0dc224aae0344657b1d3240c9037e SHA-1: 8d1849103268a9c876886fbd0c780567f75610c3 SHA-256: 1d70106ada49833627db4a908030b4362a591bfb0b0745e0bd95c9fad0812792
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bausch and Lomb Biotrue multifocal fitting guide' and a URL that appears to be a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to known malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a campaign to drive traffic to potentially malicious sites. The primary malicious IOC is the redirector 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.cc/wix?keyword=bausch+and+lomb+biotrue+multifocal+fitting+guide
    • https://cdn.shopify.com/s/files/1/0437/8837/0077/files/bollywood_movie_song_video_hd.pdf
    • https://cdn.shopify.com/s/files/1/0440/5493/7765/files/materi_amdal_smk.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/bukijivovunafexeduju.pdf
    • https://cdn.shopify.com/s/files/1/0437/5973/0839/files/rowuvar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0471/0613/0070/files/cardinal_numbers_and_ordinal_numbers_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0445/6284/1759/files/comenity_net_jessicalondon.pdf
    • https://static.usrfiles.com/ugd/52b593_bc94b1923dae47739a356b037943ca0e.pdf
    • https://static.usrfiles.com/ugd/735189_1e474d0be58344b2be372738ade2e47b.pdf
    • https://cdn.shopify.com/s/files/1/0438/1864/7709/files/ferudetamutunaluloz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/27550205984.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_off000079c9.bin
d7415ed41be0bc043303bbb7845c0c782dc6240a04cc7536aaa03359360f61ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C9 5624 bytes
font_01_sfnt_off00008cbb.bin
5ddd5c0e5dfc7e01dbf37b751b325c8a7403cbb592b057d130675799c6cd3d31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBB 10396 bytes

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