Malicious PDF — malware analysis report

Static analysis result for SHA-256 a086c98ba97ff518…

MALICIOUS

PDF

48.1 KB Created: 2020-08-03 02:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 425685b87973daf3865760bfd02e9eef SHA-1: 78fa8050b368288c343366efe7448cb2b1dca8a2 SHA-256: a086c98ba97ff5185acb9f2f1773c020f074691fda644162d2a60d1fc4619b34
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Attack on Titan' and the malicious URL. The primary attack pattern involves redirecting the user to malicious content via the identified 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.com/pify?keyword=attack+on+titan+ova+no+regrets
    • http://files.sassysewingandembroidery.com/uploads/1/3/1/3/131384113/5667161.pdf
    • http://files.brewsandmews.com/uploads/1/3/0/8/130874109/de25d.pdf
    • http://files.jakessalesandservice.com/uploads/1/3/0/8/130814676/xudanetir.pdf
    • http://files.howshehelps.com/uploads/1/3/1/3/131398008/somobuberevom_zarotogujuva_tujezala_lapemesedawir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1125/files/misuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zijilo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/77981264376.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/87342399405.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/memefexodijawazarigerew.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/48760211538.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/fotuvivo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/85194335461.pdf
    • https://cdn.shopify.com/s/files/1/0438/7959/6187/files/63871002118.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/31261694384.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/zaferikonofusotar.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_off00007efc.bin
a0f75a0fd0268f9f7f4f280b2904bec69e7cc32b3b67d2b256c60d708795492b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFC 5048 bytes
font_01_sfnt_off00009043.bin
2438e0b27354e9b3f41baa944d48cda4ede95742352f36ed431093274abcaf69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9043 10240 bytes

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