Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3fb672152358242…

MALICIOUS

PDF

48.8 KB Created: 2020-08-28 05:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89ad2d31f8bfd28c38c63c49c1a5a658 SHA-1: fac99185b67a52f155959b9cb6febeb328471e16 SHA-256: a3fb672152358242da364e9f5749833131eeca439f48c910f23f8bd04e8d9673
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL, https://ttraff.ru/pify?keyword=fallout+shelter+the+raven+flies+at+midnight+response, is embedded within the document body and is likely intended to lead the user to a malicious site. The document body itself contains garbled text and what appears to be metadata, but the embedded URL is the most significant indicator 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=fallout+shelter+the+raven+flies+at+midnight+response
    • http://xobis.sustainablemanagement.ca/uploads/1/3/1/3/131380983/601fe2e3e34766.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/2019_adp_semi_monthly_payroll_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/lyft_driver_account_deactivated.pdf
    • https://cdn.shopify.com/s/files/1/0438/1091/4466/files/vugotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/cleverbot_creepy_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/7821/1991/files/8418710978.pdf
    • https://cdn.shopify.com/s/files/1/0459/7252/1127/files/lipox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/86889869010.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/power_pressure_cooker_xl_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/gulomege.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/junuzufawasesumid.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/21658555433.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/25340184420.pdf
    • https://cdn.shopify.com/s/files/1/0432/0146/2436/files/2889921140.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072cb.bin
ec2a4e3a22cc4f7b53b52d5af5c941cbe564df0f59ad5c2332938053ba0791b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CB 5352 bytes
font_01_sfnt_off000084da.bin
fbf8e71983fbb6bb99548835b87ead0292640659c66c5c7d84f2688b12948489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DA 10292 bytes
font_02_sfnt_off0000a818.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA818 4324 bytes

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