Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bfb7ff2e1992ae4…

MALICIOUS

PDF

79.1 KB Created: 2020-09-03 09:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b77d06f0971d5feb5568e3d7450f6e7 SHA-1: ae21f6b362cb35e2d8062b84185b4f005250724b SHA-256: 1bfb7ff2e1992ae415e642a3e0bd7ab84614b41d1d80f1356ac2130bd52919b7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the embedded URLs, 'https://ttraff.club/wix?keyword=riot+grrrl+movement+information', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the primary lure. The file's purpose is likely to redirect users to a malicious site for phishing or malware delivery.

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.club/wix?keyword=riot+grrrl+movement+information
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/55502387756.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9942/files/1310914361.pdf
    • https://cdn.shopify.com/s/files/1/0463/3483/6897/files/dead_or_alive_xtreme_3_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0438/8562/5499/files/lomozod.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/rsmeans_construction_cost_data.pdf
    • https://static.usrfiles.com/ugd/f2ef67_af11f74c9f4c43d68b1ac2c371d24750.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2054b899cf84fc094ad39843c379632.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_c9507accb11e4ebca5ab3d51ec98abe1.pdf
    • https://static.usrfiles.com/ugd/3fb742_906b4d6b496642f9932af6c49c9d81fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f6c7368f94247e494fa07c04dd2c076.pdf
    • https://static.usrfiles.com/ugd/1b8612_2a1b41212a7f483c9e91aaec375ec9eb.pdf
    • https://static.usrfiles.com/ugd/9c43ec_cbca81cfe91243c0ad051d6a9544406d.pdf
    • https://static.usrfiles.com/ugd/4d6844_2d9e9e7ce3204ef8a4a6c12f49d3957b.pdf
    • https://static.usrfiles.com/ugd/5de1df_0c667732105949568f43aa57d38c1faf.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_off0000fabd.bin
8802f2afe5f7774f0159f4139fd35ddbd6eab20a6c27c5effa998cf7f4206677		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFABD 4976 bytes
font_01_sfnt_off00010ba6.bin
d60f5b67d9e8bfc7bed3be33c134381603279b6f010b64228608287d7274d6ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA6 10392 bytes

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