Malicious PDF — malware analysis report

Static analysis result for SHA-256 56590e3591446cc5…

MALICIOUS

PDF

51.1 KB Created: 2020-08-01 16:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb7826063733cb5e21a408308c64331 SHA-1: 188de6b8f444c7e8f0ef75bc0741ae3159f414a0 SHA-256: 56590e3591446cc578efe0d8320029b31424a8f8449d2ac96242938d7993e1a8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is used in conjunction with a search query for 'vmware fusion serialz'. This indicates a phishing attempt disguised as a software key search result. The document body, though heavily obfuscated, contains references to the same malicious URL.

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.ru/pify?keyword=vmware+fusion+serialz
    • http://files.whatisabbydoing.com/uploads/1/3/0/8/130874197/ripogifidezij.pdf
    • http://files.ugokiteboardingwest.com/uploads/1/3/1/4/131453198/6872352.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/zepexomukapabobukibizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/37027260130.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xatet.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/pimolatifiguzurev.pdf
    • https://cdn.shopify.com/s/files/1/0432/2643/1652/files/63456354195.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9173/files/74185967957.pdf
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/podigexilab.pdf
    • https://cdn.shopify.com/s/files/1/0430/7776/3226/files/zuriradojilitoropokored.pdf
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/xixatabeja.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_off000084ee.bin
4b8100957543e6d56896d6426c266bb5bc961d833097651c285022f7c977882f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84EE 5020 bytes
font_01_sfnt_off00009606.bin
d3450f0f653adadea1531c5a77b252a5c2d2f468ec541e2dcb16458732f67847		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9606 13056 bytes

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