Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a4b3f4497d97a0…

MALICIOUS

PDF

44.8 KB Created: 2020-08-30 07:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ce001413701175ec7f52d38dfba7207 SHA-1: a055cd9d4297795807afd17f76e8ca054672f11e SHA-256: 43a4b3f4497d97a0c1f1f00266f0db9e9043332fa5ded78c70b81a6e271bf4ea
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for phishing or malware distribution. One of the primary links, 'https://ttraff.com/wix?keyword=download+imperium+civitas+3', is flagged as a malicious redirector. The document also includes a visual cue suggesting a download, further supporting a malicious intent to trick the user into clicking a link. No scripts were extracted, but the PDF structure itself facilitates the attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=download+imperium+civitas+3
    • https://static.usrfiles.com/ugd/b8c837_4fac8b22f7e44a8093401ab03043d3a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_78b162e72da3437086b193559b6a6bf9.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2dc3b7792394de795b22d48e32dcdb1.pdf
    • https://static.usrfiles.com/ugd/d5415a_89f29a3932f64709aa579e9432948b3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_770529f384cc46e985d680319b9a3c68.pdf
    • https://static.usrfiles.com/ugd/895bef_69624c39b1784fb0a265708f829fc658.pdf
    • https://static.usrfiles.com/ugd/ace02d_a02131018be44e6ca6c5d943bd4385fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_4089820acecb4998b9c2d4795fc5ec29.pdf
    • https://static.usrfiles.com/ugd/ae15ca_1ff121a40e574715b5540e4ad40f6845.pdf
    • https://static.usrfiles.com/ugd/b8c837_438e1362bc0744e18a14f7939ea4c637.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a6e6c3af0e04fbc8a3a456fb6f199ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_931200a67fff4940b176ef1a7a5e02f0.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_off00006505.bin
f71770ca4eb20bee3925d9ba2f2cd2d06f203b62db2cc2b9eca467cd97cc7d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6505 5532 bytes
font_01_sfnt_off000077d7.bin
7567bc3d8a74eda8b4d321c2d37195b8aae0c9b125f1aa91802f865595dc9f08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D7 15080 bytes

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