Malicious PDF — malware analysis report

Static analysis result for SHA-256 e223edb8bb6a6730…

MALICIOUS

PDF

41.3 KB Created: 2020-08-31 16:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af7b943a2dc6823ad004a37d34f3f0c2 SHA-1: 7e5afeed5ba380c82c031fb3931097fb972d227e SHA-256: e223edb8bb6a6730d393ad4408bb5a6358b3bd3d4a1a33ea1d82508ef2bfb467
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a job search strategy template. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.

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/wix?keyword=job+search+strategy+template
    • https://cdn.shopify.com/s/files/1/0432/9137/7828/files/93569161299.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67264452348.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/generic_odometer_disclosure_statement.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/89413667743.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6166/files/lovowujemaji.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/happy_manila_song_djjohal.pdf
    • https://static.usrfiles.com/ugd/55f640_745b3bce1edc48f1a1d2202d5c5cccab.pdf
    • https://static.usrfiles.com/ugd/c162b3_e1943f402ddf4162bd18c194abf67b3e.pdf
    • https://static.usrfiles.com/ugd/b4609a_7b525251026a4fe09cc0da18337a02f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_5109253166b049b291c4531faa663632.pdf
    • https://static.usrfiles.com/ugd/7598fa_cba3f5bd8b43431da668bccdb56fa16b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d0a4264b1b4400e996c6dcdbdfc7837.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_off000062f7.bin
c0d6bcd74b2c137f826bc919d30f69e0318a6107d080baa5fdc92e453622bb4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F7 5576 bytes
font_01_sfnt_off000075c8.bin
5410909d7ab027ce99b7cbc4bca9e2eccde0e75a7680a1a45a3522c540b0785a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C8 10500 bytes

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