Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2f2981cc9aa591…

MALICIOUS

PDF

42.0 KB Authoring application: pdf-parser First seen: 2020-09-24
MD5: ad9671401d51df4ae585aa0eb241d383 SHA-1: a1df22a8196e8c96c2f097cc8a7d1f4d42362f79 SHA-256: 2d2f2981cc9aa591f3629188e5556f90375129d4a06a36761e73598f141e3480
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or redirection mechanism. This is strongly suggested by the 'PDF_SEO_LINK_FARM' heuristic and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also provided a high confidence score. The document body contains garbled text mixed with URLs, further supporting the malicious intent of directing users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://pocdogs.org/uploads/1/3/0/6/130605302/dunijogef-tuxewimajo-mebukoxukireb.pdf In PDF document text
    • http://natethehitmaker.com/uploads/1/3/0/4/130476538/temamutopijadal-jitadewup-maduwanelaku-fogobanofi.pdfIn PDF document text
    • http://lataco.net/uploads/1/3/0/5/130551303/nodogazejakowidusin.pdfIn PDF document text
    • http://translatio.co.uk/uploads/1/3/0/5/130539449/zolawexuzuw_jugid_soxamorizuxed.pdfIn PDF document text
    • http://zivixuta.kformacion.com/uploads/2020/01/28/5773936.pdfIn PDF document text
    • http://drbrettagrant.com/uploads/1/3/0/4/130435898/rorerudurokuvoj-lopigawuwujaw-sugepemu.pdfIn PDF document text
    • http://zioncommunityfarm.org/uploads/1/3/0/6/130639173/5bae94ed41c1f2.pdfIn PDF document text
    • http://moonlilee.com/uploads/1/3/0/2/130292173/sigin.pdfIn PDF document text
    • http://mixedattainmentteaching.com/uploads/1/3/0/2/130272333/jorodibidifev-piluwuzakof-bidaz.pdfIn PDF document text
    • http://mjclifestyle.com/uploads/1/3/0/4/130479435/juwesibakiwu.pdfIn PDF document text
    • http://2206bumps01.fun/uploads/2020/01/28/79e0772e137cf3c.pdfIn PDF document text
    • http://krissyoneill.com/uploads/1/3/0/2/130291539/a5c92b1f06.pdfIn PDF document text
    • http://mychinesewatch.com/uploads/1/3/0/5/130589214/130589214.html#naach+hindi+movie+free+downloadIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001380.bin
3e2a5ce33f0882f97be922535e89a4043a3841d9639abd94b74aafa7aaa3e1d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1380 7996 bytes
font_01_sfnt_off00005da4.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA4 16036 bytes

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