Malicious PDF — malware analysis report

Static analysis result for SHA-256 eca43373ff0cd7cb…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 23:49:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51a043a784800f60281153ae5d380be6 SHA-1: f74c3e8fc43d4c323e81f734d8fb5217270493ef SHA-256: eca43373ff0cd7cbb2767f7ceb077fb9c2047edcd6eb859c3e285601290a4074
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=ansi+code+list+electrical+pdf', is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the URL and appears to be a lure for users searching for electrical code lists.

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.com/pify?keyword=ansi+code+list+electrical+pdf
    • http://files.silverdollardogs.com/uploads/1/3/1/4/131407818/2368517.pdf
    • http://files.irunursing.org/uploads/1/3/1/3/131380005/fff72a449f58059.pdf
    • http://files.federalpcs.com/uploads/1/3/1/3/131398140/sirexebedux-zosawovuxukesu-geguwudosewise.pdf
    • http://files.maryburton.rehab/uploads/1/3/0/7/130776336/sunakigarove.pdf
    • http://files.ardsleyeducationfoundation.org/uploads/1/3/1/4/131454883/fujojebadenusejukive.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/wewebuxiwedaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdf
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/83253559263.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/48173687865.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/3817187068.pdf
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/10265276878.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/voposugibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/gutirudosene.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/9983177859.pdf
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/selodoladuxil.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/bikidebaba.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_off000069d3.bin
4958a2856b9eb44874b419326a8e45ee60f6a3ad5610a4616be31bb68e2dc5d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D3 5140 bytes
font_01_sfnt_off00007b63.bin
26e552319f55610292fca18558986a2b2c2a79d775cae783ffff9ad9bb58d7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B63 10260 bytes

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