Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a917719329de739…

MALICIOUS

PDF

33.7 KB Created: 2020-08-18 19:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9175e1bf445e2353b235a5156feb169e SHA-1: 35d26d4c8e582f53e0b4a1fd8739f406af82ccb3 SHA-256: 7a917719329de7398d1e820aeb652c77e1764786ecb2a8cc08cbeeccc023da4c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=amityville+o+despertar++hd'. This indicates a social engineering attempt to direct the user to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or a method to obscure the true malicious destination. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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=amityville+o+despertar++hd
    • http://files.douglascornishwebsite.com/uploads/1/3/1/3/131384777/rumimomux-xegitizebif.pdf
    • http://files.thesekidshavetalent.com/uploads/1/3/1/3/131379875/ba8e8fba62b41c0.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/dinovavexuzejebin.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/vofel.pdf
    • https://cdn.shopify.com/s/files/1/0451/5551/6570/files/bkav_pro_full_crack_2018.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/catfish_and_mandala_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/87296002588.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/piwurezazugapadiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/73976873022.pdf
    • https://cdn.shopify.com/s/files/1/0432/6267/3054/files/wozovorajiwuwuwatobazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/mugutop.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/4150889034.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0102/files/9141109852.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_off000045aa.bin
a8466a263bcbc11eab135cc2e88a7c9ebf543a619ca97ccd071fb7a58ea1905d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45AA 5352 bytes
font_01_sfnt_off000057bf.bin
efbe930dab0526bba1d453666f3497d1aa038041dd6a678693a3361d5f76cd21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BF 10048 bytes

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