Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eeccabf60c67530…

MALICIOUS

PDF

40.2 KB Created: 2020-09-18 06:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fc2c652d0e739fee2975e3e8df52609 SHA-1: cb69a639b61a9fc1b56cca5a790a7c90dc30ef20 SHA-256: 4eeccabf60c67530addd882d8843cc259ebfd4ec29f0d7105a02349fcdaa50d0
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure for free ringtones, which is a common social engineering tactic. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute further malicious content.

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/wix?keyword=free+ringtones+sent+to+phone+by+text+message
    • http://naxobe.watergardenclubst.org/uploads/1/3/2/6/132681352/rutexorifavu_pelusima.pdf
    • http://files.tactmealcenter.org/uploads/1/3/0/7/130775536/8af36c9fb2.pdf
    • http://files.whitstablemusicsociety.org.uk/uploads/1/3/1/1/131163969/731439d5.pdf
    • http://files.besttoysbyage.com/uploads/1/3/0/8/130814157/1709724.pdf
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/45556692358.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/rpp_bagian_bagian_bunga.pdf
    • https://cdn.shopify.com/s/files/1/0463/3644/2524/files/kobolds_and_catacombs_rogue_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2736/5031/files/java_basic_interview_questions_for_freshers_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/mesubafadojiwamiga.pdf
    • https://cdn.shopify.com/s/files/1/0439/0692/4712/files/palufebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdf
    • https://cdn.shopify.com/s/files/1/0431/0302/7361/files/m-audio_keystation_61_ii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/pover.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_off00005edb.bin
52af132fff431de46b5b422d98b055d6952dd3ed6e25f954b34df59ef0c1ee84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDB 5468 bytes
font_01_sfnt_off00007159.bin
1902ec749ea6f842c91315d7ba50842f46c873e6adad5882678553bb683da29a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 10184 bytes

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