Malicious PDF — malware analysis report

Static analysis result for SHA-256 503586ef0bab7867…

MALICIOUS

PDF

44.3 KB Created: 2020-06-09 01:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f0b4312fad0b8cbff3a0e9c46c0e4c0 SHA-1: 522a6866dd51281f6a2b67b6278ae15ba5cb0329 SHA-256: 503586ef0bab7867b14cb3c2598b7e8f8528a66e92602d09d5260aacbbaea402
140 Risk Score

Malware Insights

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

The PDF contains a lure instructing the user to enable macros or editing, which is a common technique for malware delivery. It also contains a mass external PDF link farm, with multiple links pointing to suspicious domains. One critical heuristic identified a PDF link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/wp3?keyword=how+to+copy+protected+pdf+file#how+to+copy+protected+pdf+file'. This suggests the document's primary purpose is to redirect the user to malicious content.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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.cc/wp3?keyword=how+to+copy+protected+pdf+file#how+to+copy+protected+pdf+file
    • http://organizedoptimism.com/uploads/1/3/0/6/130621557/zobaviriwi.pdf
    • http://74-123-77-104.mgwnet.com/uploads/1/3/1/3/131383388/pekukimigiku.pdf
    • http://candccreative.com/uploads/1/3/1/8/131856161/3827239.pdf
    • http://camelotrevisited.net/uploads/1/3/0/8/130814856/20f123.pdf
    • http://danacates.org/uploads/1/3/1/3/131383409/f49a885736efa1.pdf
    • http://ea-creations.com/uploads/1/3/1/4/131453623/jejomoz_dizukavo_botasinesiwuxo.pdf
    • http://zahnspange-ried.at/uploads/1/3/1/0/131070098/pubowu_dekewufalenowi.pdf
    • http://vyktoriafinancialservicesllc.net/uploads/1/3/0/8/130814681/xuvigozopu.pdf
    • http://_mta-sts.recure.eu/uploads/1/3/1/4/131455024/ac72ff0075f.pdf
    • http://landscapingsandysprings.com/uploads/1/3/0/9/130969577/wofugipi.pdf
    • http://souloshe.com/uploads/1/3/1/4/131452977/dorurafutenowixerapa.pdf
    • https://baleboloj.files.wordpress.com/2020/06/25261960956.pdf
    • https://sajovuvinar.files.wordpress.com/2020/06/25975218290.pdf
    • https://peropifi.files.wordpress.com/2020/06/wuvegumaref.pdf
    • https://pufexek.files.wordpress.com/2020/06/nomumeribasagifil.pdf
    • https://sofesetipi.files.wordpress.com/2020/06/14323064627.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008091.bin
09d01bdf6d0d691bfc6f96cd816f694aa5f834ebafbdd4fe0346f29e0f5fcb4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8091 10776 bytes

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