Malicious PDF — malware analysis report

Static analysis result for SHA-256 405ab5bb081fa662…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 14:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43cec2278d7de2599ec113575aed4fb4 SHA-1: d82af710ed0c3748dd2d3af6f0fb2145c8d57cc8 SHA-256: 405ab5bb081fa66221eebca47628d51079fe2a52de8528203e9249a38bb3571f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a deliberate attempt to lure users to potentially harmful sites. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting a phishing or malware distribution lure.

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=internal+arcuate+fibers+form
    • https://static.usrfiles.com/ugd/b8c837_dbf61614925c45b59beeea5a0c209236.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cb7f8b2e54842298383683189af6eff.pdf
    • https://static.usrfiles.com/ugd/9e53d4_0dacda3310b94e51b6a1dfcef569328e.pdf
    • https://static.usrfiles.com/ugd/7e6083_55227ccf001c4d89b46b95436a7dfa5c.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/lagu_ardina_rasty_kangen.pdf
    • https://cdn.shopify.com/s/files/1/0432/6693/2902/files/mumose.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/automatic_conveyor_belt_system.pdf
    • https://static.usrfiles.com/ugd/764aaa_9b105c1c63664911b76040680706e967.pdf
    • https://static.usrfiles.com/ugd/5b9a87_f29a5be6367448af83c3a537f51963c1.pdf
    • https://static.usrfiles.com/ugd/49be48_f5b6e32836e24eaf95369f84cc989271.pdf
    • https://static.usrfiles.com/ugd/b8c837_f49eabad86f048a197efaeb994fdb866.pdf
    • https://static.usrfiles.com/ugd/66c878_f52308af391643feb697ba4bae2c9c9a.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_off00005c69.bin
be07f975a4f5cde810e0a876d066f5e1d8cd5abbe798cbfe46babddfa58478cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C69 4984 bytes
font_01_sfnt_off00006d33.bin
6ece931a918f48484541a48f31d1b4c2961b0d8646ff238768ecb739357ae9f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D33 10516 bytes
font_02_sfnt_off00009106.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9106 4324 bytes

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