Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32f453c3619b9f3…

MALICIOUS

PDF

106.0 KB Created: 2020-08-29 13:10:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70eabb101bbaeb867596088b7fbf44a7 SHA-1: f7b44995955769a5bc2f356cbff7e42a873a9c3e SHA-256: d32f453c3619b9f3da8c7b64d6e0398afcbee72e793044ab4f51f15969ae59eb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=naomi+watts+twin+peaks'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. The presence of a large number of embedded links, many hosted on static.usrfiles.com, suggests a link farm or SEO poisoning attempt to increase visibility and traffic to the malicious redirector. The document body, though heavily obfuscated, contains the target URL, reinforcing the malicious intent.

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=naomi+watts+twin+peaks
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/92072430680.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/80802854131.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/free_common_law_separation_agreement_template_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/risetolorigipopigo.pdf
    • https://static.usrfiles.com/ugd/b8c837_f4afea57049f47549d6eebe7b958a90e.pdf
    • https://static.usrfiles.com/ugd/b8c837_1704dd35a41148099ccebb10aa52a13f.pdf
    • https://static.usrfiles.com/ugd/b8c837_275cda56b0994275b542f2aee5bec5c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4ac63263e30416d8cdd50f8efd25a74.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff10f24e6597413396d47af256bffd89.pdf
    • https://static.usrfiles.com/ugd/b8c837_261a38a48e144ad491ef842401effe54.pdf
    • https://static.usrfiles.com/ugd/b8c837_311dbce3144d43c98b3106dcf7d0116c.pdf
    • https://static.usrfiles.com/ugd/b8c837_62d82fdcc5a845b485b2fa1305dc45c9.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_c659b891591942a0bf3bae6317d28000.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_off0001579e.bin
556adcf81f565923c66b9cdb71e92ca3818939659548a1fe14544641bef7a040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1579E 4752 bytes
font_01_sfnt_off000167c0.bin
51b10f73a703e57353261ddb08c5cb62954d25850e1b6c4b2251ef0f446f98c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x167C0 10732 bytes
font_02_sfnt_off00018c78.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18C78 4324 bytes

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