Malicious PDF — malware analysis report

Static analysis result for SHA-256 50bfa5072389274b…

MALICIOUS

PDF

40.0 KB Authoring application: Poppler-utils
MD5: 51f9f24b0c52381ceb7eddcc57b14a49 SHA-1: 455ef451917b60c09daefa18c959cba333f5a6d1 SHA-256: 50bfa5072389274b5b6a463a243b6b9be1385b7697f163ea8ebf1f469a43520b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links predominantly point to external PDF files hosted on various domains, suggesting a phishing or malware distribution campaign. The ClamAV detection of Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious intent. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://stjames-madnews.net/uploads/1/3/0/2/130273842/gufamapelojelonuj.pdf
    • http://jaxifi.remstroi-metal.ru/uploads/2020/01/28/wepelufuwume-pixutifot.pdf
    • http://cbulloughinternshipportfolio.com/uploads/1/3/0/5/130590531/bolenotoretap-zamepem.pdf
    • https://roxozotal.weebly.com/uploads/1/3/0/3/130313141/fed891.pdf
    • http://dlitefullgifts.com/uploads/1/3/0/2/130287462/dc82ae17b23.pdf
    • http://nathannegri.com/uploads/1/3/0/2/130272591/8f858a24a963.pdf
    • http://powertospeaknaked.com/uploads/1/3/0/4/130476594/jafujumibuzezu.pdf
    • http://bitsbridlesbrambles.com/uploads/1/3/0/6/130621140/bamarofoguzid.pdf
    • http://molecularsupplements.com/uploads/1/3/0/5/130588349/5180231.pdf
    • http://tjentcorp.com/uploads/1/3/0/3/130313686/ratoxadab.pdf
    • http://carwashpumprepair.com/uploads/1/3/0/5/130588214/bogenuw_wedajesekag_xujikibixe.pdf
    • http://nicoleedwardslimited.com/uploads/1/3/0/6/130639949/meboxuwumego.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/2/130288492/130288492.html#starting+out+with+java+from+control

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001528.bin
b5d87211d73200e13e5e54002152fbdfa2608c75b4b9401612833d2c03b142d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1528 9160 bytes

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