Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8b078741b927f6…

MALICIOUS

PDF

37.6 KB Created: 2020-07-31 04:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0cd9c91fcd4df8ec9b37fbfe782f94f SHA-1: e3d64a2a73d49c22805dc98889195b5c177e684f SHA-256: fe8b078741b927f683a3bc1e7642d8ec8d6b5650215a289d73b6794ccf9bb1b5
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting the malicious intent of directing users away from the document. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=playing+the+queen+s+gambit+a+grandmaster+guide+pdf
    • http://files.centralpalgbthistory.org/uploads/1/3/1/8/131857723/f3df34cebb41.pdf
    • http://files.andrewfcartertraining.com/uploads/1/3/0/9/130969405/4778150.pdf
    • http://files.northernontariodarts.com/uploads/1/3/2/8/132814468/rubos_firiparawakek_pedab.pdf
    • http://files.guitarhugs.com/uploads/1/3/0/9/130969876/7428276.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/lipigixezogidij.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/figawerenerelaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/23764189728.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/78959144665.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4295/files/vapivize.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/rikakikanomogijatino.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/jewufofisulidefelivoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/78354084780.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/26037497909.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_off00005418.bin
a414258faf42552e4dda8671fabfa2c0af3a2fac9ff4fc3fdd2674039dc5d2fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5418 5596 bytes
font_01_sfnt_off000066d9.bin
8281359563c8eb7e02e1456f3c939a12adc7cfd175941a63996e35d04f2ef68b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 9992 bytes

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