Malicious PDF — malware analysis report

Static analysis result for SHA-256 72989a65db7de914…

MALICIOUS

PDF

47.0 KB Authoring application: LibreOffice Draw
MD5: d53669a3d690b45c629886d4b75e8f56 SHA-1: 0936386b85be4ac29d60cfa3aa83d755a0e9945a SHA-256: 72989a65db7de914414e43176b7d4b5f62bb03e5388bc3781e1bf6e286f642c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm with 24 links, many of which are structured as numeric slugs, indicating a potential SEO poisoning or phishing campaign. The heuristic 'SE_DOWNLOAD_BUTTON' suggests a call-to-action lure. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious download intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://advancedspeedtechnologies.com/uploads/1/3/0/4/130483817/6710386.pdf
    • http://mysteriousancestor.com/uploads/1/3/0/2/130288563/181814.pdf
    • http://saskatchewancabinrentals.com/uploads/1/3/0/6/130621134/0782b7479379be.pdf
    • http://movalhome.net/uploads/1/3/0/4/130476733/5850727.pdf
    • http://theaanh.com/uploads/1/3/0/6/130604892/2796729.pdf
    • http://nplfiles.com/uploads/1/3/0/7/130775150/lugozabonev_tiludetexi_gideve.pdf
    • http://657maidmarion.com/uploads/1/3/0/4/130483329/zupogikuwoboxolof.pdf
    • https://fexobisev.weebly.com/uploads/1/3/0/4/130490328/webifumeteki_puvuwogufumewe.pdf
    • http://nugiga.sibket.ru/uploads/2020/01/28/56841.pdf
    • http://partnersinrelief.com/uploads/1/3/0/6/130639117/fogozez_pusamuwi_vunizurafut_fenavijuwepuxe.pdf
    • http://stuffthatsneat.com/uploads/1/3/0/4/130475909/6273148.pdf
    • http://workone.info/uploads/1/3/0/2/130274370/jodamopupaluna_wulibofetaj.pdf
    • http://policetrailer.com/uploads/1/3/0/4/130435650/130435650.html#angry+birds+rio+game++free
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001371.bin
4f4cb45be4cf08cc8c91f33fb0c554521b6585d5a6850488f0b6f5bdae81702e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1371 8460 bytes
font_01_sfnt_off0000666b.bin
55c7abf7ae0aba6c49693877a97b91f57c2a59d8dea67445a51e0bfe4f0fb955		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666B 16840 bytes
font_02_sfnt_off00007d4f.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4F 1708 bytes

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