Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdc0929d5fa18e55…

MALICIOUS

PDF

60.5 KB Created: 2020-08-30 11:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7661d667ac03bc451d04bb63ea65367b SHA-1: b7433ee96fc839dae1f29a420b42b77d0b86400c SHA-256: bdc0929d5fa18e553989b51adb121cc6dca216a352edf8d0004ef6549dd839df
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.com/wix?keyword=carnal+knowledge+short+story'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into visiting a potentially harmful site. The presence of a link farm further indicates a malicious intent to distribute or redirect traffic.

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=carnal+knowledge+short+story
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/89590618051.pdf
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/87610263073.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/uptet_written_exam_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/rooting_moto_g_3rd_gen.pdf
    • https://static.usrfiles.com/ugd/e2c250_9f1c81a7e2cf4fdba8ea47aed1965a15.pdf
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/78365441546.pdf
    • https://cdn.shopify.com/s/files/1/0433/5570/1398/files/zorakapepolakesebejewuboj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdf
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/53995102286.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/event_coordinator_resume.pdf
    • https://cdn.shopify.com/s/files/1/0460/0102/9279/files/zesepikunajipamorewup.pdf
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/alaska_airlines_flight_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8553/files/counter_strike_1._5_ekran_bytme.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_off0000b005.bin
4608210ba1737c040708d353fb2cde1b5fb454fe31cc635162374ec6d0addc62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB005 5248 bytes
font_01_sfnt_off0000c1f0.bin
1005a5ec628c0ae4785692eeee411b42ca61f3b8e9d51eedf48f70069f2ab1cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F0 10316 bytes

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