Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d6767a9bfe693e7…

MALICIOUS

PDF

35.8 KB Authoring application: Soda PDF
MD5: 96b5b4d6686f05699d92a524d0329f50 SHA-1: afb9f051bed2637e49680ff550d5b9ccbb681fd9 SHA-256: 1d6767a9bfe693e7b2e48fce19414ad74fd1f05a01918241cd2b6c6226698198
160 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM'. The document body, though heavily obfuscated, contains text related to reducing PDF file size, which may serve as a pretext for the embedded links. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document might also be intended to trick users into providing passwords for archives, further indicating a phishing or social engineering attempt. The primary IOCs are the domain 'ah1.life' and the numerous other domains hosting linked PDFs.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ah1.life/uploads/1/3/0/6/130620565/gisebiluvumap_zubusas_lolakupojo.pdf
    • http://ancestryseekers.com/uploads/1/3/0/6/130620427/lopuvepikuli.pdf
    • http://joyofsyntax.com/uploads/1/3/0/5/130590770/6769557.pdf
    • http://witsendvineyard.com/uploads/1/3/0/6/130621814/48ccd2efab.pdf
    • http://adlevo.io/uploads/1/3/0/7/130739375/gurimuko.pdf
    • http://berkshireheros.org/uploads/1/3/0/7/130776779/74109099e.pdf
    • http://aestheticsplus.co/uploads/1/3/0/3/130313157/gipuluve-lokinuk.pdf
    • http://battlecreekendo.com/uploads/1/3/0/4/130436166/lorate-tosuj-fekinolutet-sugaxuwurew.pdf
    • http://www.palmaads.com/uploads/1/3/0/9/130968957/2986450.pdf
    • http://scrambledtosunnysideup.com/uploads/1/3/0/5/130543798/bf99c.pdf
    • http://sarahsavers.com/uploads/1/3/0/5/130551839/losumiju.pdf
    • http://eegtube.com/uploads/1/3/0/7/130775174/tovukufezigos.pdf
    • http://britishmountainacademy.com/uploads/1/3/0/8/130873737/fexogusul.pdf
    • http://kanegroup.voyagerwebsites.com/uploads/1/3/0/2/130271042/130271042.html#how+to+reduce+pdf+file+size+without+losing+quality+software
    • http://britishmountainacademy.com/uploads/1/3/0/8

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b2.bin
cc2e8e98705c09de8c1454b247197b4d643e663283fa4f4487e90e9be0720306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32B2 8084 bytes

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