Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea5529d9cfbdc5f…

MALICIOUS

PDF

79.5 KB Authoring application: Inkscape
MD5: b09d763bafb0a6b4bdca6bb64745727e SHA-1: 08faec6f10fa15c923939361d9b4976d4691d055 SHA-256: 0ea5529d9cfbdc5f65c96425d43ac35c0cd32089d6b6de0976954351fc5b8998
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, which is a common tactic for SEO poisoning or distributing malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://paj.tarikat.ru/uploads/2020/01/27/fomog.pdf
    • http://angelssandlot.com/uploads/1/3/0/6/130620679/3e0cab48ccfa3.pdf
    • http://mercadohuanacaxtle.com/uploads/1/3/0/5/130551599/9b2c5d7cf8d177.pdf
    • http://mirrorinyourattic.com/uploads/1/3/0/6/130621484/jogano.pdf
    • http://fidapewiga.vetriks.com/uploads/2020/01/27/bff354.pdf
    • https://wakurejedajaw.weebly.com/uploads/1/3/0/5/130546294/leramonapidolo_ralubiderikuli.pdf
    • https://jugokolapumuni.weebly.com/uploads/1/3/0/5/130590779/keninepab.pdf
    • http://tallahasseewmc.com/uploads/1/3/0/5/130546415/tijuwovonedax.pdf
    • http://laising-swd.de/uploads/1/3/0/4/130490078/644de9.pdf
    • http://miniturecowboysrus.com/uploads/1/3/0/2/130271042/vabuxokagepexipa.pdf
    • http://mytexanlife.com/uploads/1/3/0/6/130603749/9236475.pdf
    • http://kimberlifreilinger.com/uploads/1/3/0/5/130541073/4736552.pdf
    • http://goodn3wsgirl.com/uploads/1/3/0/2/130272266/sesanene_nowajofofid_mutusod.pdf
    • http://supergcoating.com/uploads/1/3/0/2/130270746/904658.pdf
    • http://natashadavid.com/uploads/1/3/0/6/130604306/449109358.pdf
    • http://wizigu.hallo-mensen.com/uploads/2020/01/28/713c18.pdf
    • http://mrserickagraham.org/uploads/1/3/0/4/130478831/sufibe.pdf
    • http://mibabi.photomuza.ru/uploads/2020/01/29/2662443.pdf
    • http://totalaccesssolutionsltd.com/uploads/1/3/0/5/130589219/5b044624a786167.pdf
    • https://roxarotoxekod.weebly.com/uploads/1/3/0/4/130475966/4179913.pdf
    • http://caroleoliverpsychodrama.com/uploads/1/3/0/2/130272081/lodofalomuwe.pdf
    • http://bamshotgun.com/uploads/1/3/0/2/130272591/kirawume.pdf
    • http://advance-it.net/uploads/1/3/0/4/130435751/130435751.html#alfabeto+fonetico+internazionale+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • 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_off000013b0.bin
2dc5340e4381d7cbdd910a2a3df508b12473676791c5747c81f62a9430b0133c
pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0 11608 bytes
font_01_sfnt_off0000bfa7.bin
b9cb8c41efce8579de9a7b2f702c5c539d32872cb087ff18c373fb09b7b92676
pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA7 3520 bytes
font_02_sfnt_off0000d0a3.bin
54bad58621e48881b02b49b11f646e738c94d88c9d6505404dff3844a7fc4d6f
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A3 28436 bytes