Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bd5bf2edb218fd…

MALICIOUS

PDF

37.3 KB Authoring application: LibreOffice Draw
MD5: a4ee58cb8a94eebff60140ed45e8324e SHA-1: a658037509249bd218a0222b6f1916228ea4a85c SHA-256: d3bd5bf2edb218fd5d5c6234d291bdecd2a9b980eba8cb54174f7f505126df0e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, indicating a link farm strategy. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample, and the document body was heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.dirapublishing.com/uploads/1/3/0/6/130621708/5086988.pdf
    • http://sunriseonlinecourses.com/uploads/1/3/0/3/130379228/d43ee.pdf
    • http://www.zenithperpetual.com/uploads/1/3/0/6/130639121/216222.pdf
    • http://manhatta2021.com/uploads/1/3/0/8/130814774/nuzuxozupijux.pdf
    • http://www.realbalitour.com/uploads/1/3/0/2/130288909/b19ecb.pdf
    • http://mta-sts.mail.canicrossnederland.nl/uploads/1/3/0/4/130435966/864dd151a1b2501.pdf
    • http://wildplayniagara.com/uploads/1/3/0/2/130270831/vanivupijolasu_rozog.pdf
    • http://t54qo.bpmtc.com/uploads/1/3/0/8/130874629/pelonopovulu_bijerajonap.pdf
    • http://montanagiftstop.com/uploads/1/3/0/6/130604892/93f199b35942.pdf
    • http://scireinke.com/uploads/1/3/0/7/130739922/zuxes_juzaxenedowudel.pdf
    • http://www.96-sle-gmc-sierra.com/uploads/1/3/0/5/130538842/155714.pdf
    • http://nnvmayorscup.com/uploads/1/3/0/7/130738628/kedewidomamaj-dupirirezaso.pdf
    • http://travel.rodhillportraits.com/uploads/1/3/0/3/130312951/130312951.html#acls+certification+requirements+aha

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a12.bin
d1123895b93994e4b23034b32112da6548931725847d44195d5ce19995b428ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A12 7888 bytes

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