Malicious PDF — malware analysis report

Static analysis result for SHA-256 a81dd8fc8f5805f0…

MALICIOUS

PDF

42.2 KB Authoring application: Scribus First seen: 2020-09-24
MD5: 83c5e3927f9013dc16d3b2d60a8ca443 SHA-1: bdb50eb242f4aaa35667cd5bcb5c53d25a00a992 SHA-256: a81dd8fc8f5805f0ac92d6e6f16fa1896beb3a56149e2562f45d8aafbae6e159
152 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded external links, indicating a potential link farm designed to redirect users to malicious content or phishing sites. The document body contains a mix of seemingly unrelated text and the extracted URLs, further supporting the phishing or malicious redirection hypothesis.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://dimitrovakataacademy.com/uploads/1/3/0/6/130640000/fogurunekofur.pdf In PDF document text
    • http://laandkin.com/uploads/1/3/0/4/130483805/c6b0e5.pdfIn PDF document text
    • http://mysteryshoppingonlinejob.com/uploads/1/3/0/6/130620537/defedisonusoxedoseso.pdfIn PDF document text
    • http://nabhthefam.com/uploads/1/3/0/4/130488169/nekifefogugisirej.pdfIn PDF document text
    • http://liv.exale.pw/uploads/2020/01/27/nedonale_sakibafalujex_fegitisapaj_vamaromemoker.pdfIn PDF document text
    • http://fuf.copyrightcontact-1000005296384.com/uploads/2020/01/27/nidevipe-kuzoretejir-vokarevezudem-xifevupuxumovat.pdfIn PDF document text
    • http://www.constellars.com/uploads/2020/01/27/8725444.pdfIn PDF document text
    • https://nosurabomoda.weebly.com/uploads/1/3/0/4/130483309/magokoxasokik.pdfIn PDF document text
    • http://msluxuryhouses.com/uploads/1/3/0/5/130543170/dugara.pdfIn PDF document text
    • http://marielouisehall.co.uk/uploads/1/3/0/5/130550998/201c10d.pdfIn PDF document text
    • http://myflorapops.com/uploads/1/3/0/4/130477234/8617a.pdfIn PDF document text
    • http://aquariusfunding.com/uploads/1/3/0/5/130589199/6009663.pdfIn PDF document text
    • http://bandito.agency/uploads/1/3/0/5/130543740/1037544.pdfIn PDF document text
    • http://dennismodafferi.com/uploads/1/3/0/6/130621574/18efa628d5.pdfIn PDF document text
    • http://fumafixagu.amazon-sellers-fba.com/uploads/2020/01/28/fagepazawib.pdfIn PDF document text
    • http://rehphotography.org/uploads/1/3/0/2/130271043/130271043.html#alarm+won%27+t+sound+androidIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
🗂 Part of campaign: christinetschida.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000149a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149A 8572 bytes
SHA-256: 358ba38ddd9eba1b707ced5e2ac08d283bf24302c723b8e2cd6faf6d99843624
font_01_sfnt_off00006971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6971 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc