Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b4f705c766cf3b…

MALICIOUS

PDF

41.0 KB Authoring application: Adobe PDF Library 9.0
MD5: 6dbc9e95014fedb7a7c542c1cfbd4518 SHA-1: 98549d6546bb06ebcf59bebfb35969993454b4b1 SHA-256: 10b4f705c766cf3b2b6e93a4cb12d3b463d977e6003012af1a64cacf171358f1
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by multiple heuristics, including a critical ClamAV signature for 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a phishing or download lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' further implies that the document may be part of a multi-stage attack, potentially directing users to download an archive that requires a password provided within the document itself. The embedded URLs are likely used to host or redirect to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://tampabayimprovfestival.com/uploads/1/3/0/6/130620366/b99f7b790d3.pdf
    • http://protopgranite.com/uploads/1/3/0/6/130640025/witomalasuz-rasumoziko-nivagitetulob-mibipemifize.pdf
    • http://netwerkpijnrevalidatie.com/uploads/1/3/0/2/130289355/judupoburumebox.pdf
    • http://bilam.rurostelekom.ru/uploads/2020/01/28/nibujadenomuwadin.pdf
    • http://wowewi.vipiski-besplatno54.icu/uploads/2020/01/28/tabativulal_tarimewitul.pdf
    • http://terriguy.com/uploads/1/3/0/6/130621870/lesejezitetezogigux.pdf
    • http://energy-beatz.com/uploads/1/3/0/2/130289166/vejodifip_nijimisutobini.pdf
    • http://vefe.atikpastanesi.net/uploads/2020/01/29/2057e11f.pdf
    • http://ssjohn832.com/uploads/1/3/0/5/130588802/2d530a0efb.pdf
    • http://dossys.com/uploads/1/3/0/4/130476248/0c10b8fc.pdf
    • http://duwa.seovtop.ru/uploads/2020/01/28/6365407.pdf
    • http://rebeccalaplacaattia.com/uploads/1/3/0/5/130589238/130589238.html#libros+de+calculo+integral+gratis+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001359.bin
d4553e417c382db02250bbaf358771822749458beae6858b67dc0f25926e484a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1359 9204 bytes

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