Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf54d7226fcd5b1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-23 15:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cfb9312358606a16e08620c71727b2c SHA-1: a95193b8a39065ad19a53f5356a5e0da6beb3d46 SHA-256: 4bf54d7226fcd5b1c9ea3d69b36c8f5e452cdbd003a25c65e750a01df3ad04ff
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text related to a "Dundie award nomination certificate template" and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious IOC is the redirector 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=dundie+award+nomination+certificate+template
    • http://files.elliotgardner.com/uploads/1/3/0/7/130775679/niredovevifijamolu.pdf
    • http://files.worlandshootingcomplex.com/uploads/1/3/0/8/130873794/b709dcc54656450.pdf
    • http://files.panzyler.com/uploads/1/3/1/0/131070508/677c1cd80d.pdf
    • http://files.planningthewestside.org/uploads/1/3/2/6/132695714/sitovibigeda.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/17518039934.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/gesufugowapusitasoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/algorithme_cours_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5971/files/endeavour_episode_guide_imdb.pdf
    • https://cdn.shopify.com/s/files/1/0431/1669/1612/files/28789278027.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/56207031022.pdf
    • https://cdn.shopify.com/s/files/1/0437/3089/4999/files/dojofisiwoxejunevijo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/dulazurolif.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/bingo_sheets_numbers_1-_20.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_off00006f3c.bin
220b849ee6e340363b43c3d8d55a4b791e3f93921ba10b3af0af86663455e6e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3C 5212 bytes
font_01_sfnt_off000080fa.bin
d298fed60d2797f512bd7c6bc334f32427d7606f0d190a96083b7376fb518e8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80FA 10164 bytes

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