Malicious PDF — malware analysis report

Static analysis result for SHA-256 89afd89d24cfb20f…

MALICIOUS

PDF

40.6 KB Created: 2020-08-31 06:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fed8d7b3a841bf23746855e411818721 SHA-1: 983108c1e947894aca839df5f598cc325f82db1a SHA-256: 89afd89d24cfb20ff514d8eb0c781a5c8767ebdf3a24982acab2d03b21c4759c
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that are part of a link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a '1999 toyota sienna repair manual' and a URL, suggesting a lure to trick users into clicking the malicious link. The presence of multiple Shopify links indicates an attempt to obscure the malicious destination.

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=1999+toyota+sienna+repair+manual
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/debesanapafaxelurovawat.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/malapafuzeroku.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/mibanigubabolovija.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/dojuresezizefebarebu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40313354442.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/financial_accounting_ifrs_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/63810569645.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/fagitemelibutisatidizuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/southern_and_northern_blotting.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5142/files/bedimedu.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f8343cff1d749209f13e85b872057f1.pdf
    • https://static.usrfiles.com/ugd/764aaa_650d5d8245ee43a982065f6787f4b87e.pdf
    • https://static.usrfiles.com/ugd/b8c837_290bc459e8dc47b8aea4d3692838abe0.pdf
    • https://static.usrfiles.com/ugd/0f1814_f453cf0709824c649539200dac723715.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_off00006184.bin
9f7e65a6d8b6dd29ef2a0ce3838a1a3b8219a71c17272d9b4a53e99aad122690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6184 5180 bytes
font_01_sfnt_off0000730e.bin
6fc850745ae245dd587b806b6eb1fe1afeb13b233199fff9e54f2092172f5804		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730E 10048 bytes

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