Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f918689659cd57d…

MALICIOUS

PDF

42.9 KB Created: 2020-07-28 17:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cd73c86af971edd589b3c258fbe425d SHA-1: b98bb5ce16b11281fd5f888be21f6522f025e438 SHA-256: 3f918689659cd57daa8754e14c62a9875a527e62ebab386569f158987a6caa6e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on 'cdn.shopify.com', suggesting an attempt to artificially inflate search engine rankings or distribute content. The document body, though heavily obfuscated, contains references to 'vlookup' and 'hlookup', potentially luring users interested in spreadsheet functions. The primary attack pattern involves redirecting users through the 'ttraff.com' URL, which is flagged as malicious.

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=vlookup+hlookup+pdf
    • http://files.the-beaver-house.com/uploads/1/3/1/6/131607075/lusoromero.pdf
    • http://files.alifeworthliving2.org/uploads/1/3/0/8/130874318/lenalaw-fowez-legojumafixixin-tunotababivofen.pdf
    • http://files.susanjzall.com/uploads/1/3/1/0/131070792/87e9f67d446.pdf
    • http://files.the-beaver-
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/mujepamak.pdf
    • https://cdn.shopify.com/s/files/1/0428/3626/3078/files/73295428828.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/tuvogilozoze.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/zawezarojimeru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9487/files/rojonuxibakemurisawan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8378/4601/files/fomonivubanalanivij.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/savazelogux.pdf
    • https://cdn.shopify.com/s/files/1/0429/4072/7463/files/14846784105.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/9676595759.pdf
    • https://cdn.shopify.com/s/files/1/0430/6518/0321/files/39033914674.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/budiloraxedodu.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_off00006cce.bin
e71328f9fcaeef27dd65b284a0cc9e4eda8ecd537f5138b8054b386ee5beb885		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCE 4204 bytes
font_01_sfnt_off00007b1a.bin
a7f93f90b1d78a264c4db5eaa3d14bc9532f25d4dfa20780c174f7fd2d24ba65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1A 10508 bytes

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