Malicious PDF — malware analysis report

Static analysis result for SHA-256 c284335a7d7d4649…

MALICIOUS

PDF

42.3 KB Created: 2020-10-17 11:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 715682bb0cde028204949f8d0b55fb45 SHA-1: 5b3ac08687a14007c89a5215e3cb39492718532d SHA-256: c284335a7d7d464949ba58c7aa3b5e44e47f20fa973e80f7067813a0e635b6b4
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The primary URL, https://ttraff.club/123?keyword=cognitive+test+anxiety+scale+pdf, is likely intended to lead the user to a malicious site. The document body contains obfuscated text and URLs, further supporting the malicious intent. No scripts were extracted, limiting the analysis of specific execution techniques.

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.club/123?keyword=cognitive+test+anxiety+scale+pdf
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f87a50c1a9d0.pdf
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8701c52db16.pdf
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f870bc2908ee.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdf
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/9437281.pdf
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/lekov.pdf
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/mevujogimuk_kawepamepi_zagigejolineni.pdf
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/c78f845f5.pdf
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/sesapilegipe.pdf
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/vekukifoluwupowone.pdf
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/gipijibulinu-xekipovifo.pdf
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/waxugozukidu.pdf
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.pdf
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/ac8c8a8.pdf
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdf
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/salopuro-dawibibidir-rebofekoninufam.pdf
    • https://uploads.strikinglycdn.com/files/971b08de-5d07-4754-87c4-fafd34bf02c4/juzoga.pdf
    • https://uploads.strikinglycdn.com/files/5857a0f1-104c-4905-be72-7d70a7c11d1f/wametefogifonetuvepoduw.pdf
    • https://uploads.strikinglycdn.com/files/106ea757-a7be-461e-acfd-e24e6928917e/3913237800.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_off000067e8.bin
4ceddce3f0d25e448ad9261cc9fa680cdf72644a97588aee117776c624407bbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x67E8 5364 bytes
font_01_sfnt_off00007a52.bin
ee6b2d76a278229a5418ba2f09d7dcb624c4e6c9a3b0fe85bf57ce5522a73013
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A52 9848 bytes