Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d8cefe51e69f20d…

MALICIOUS

PDF

50.0 KB Authoring application: Inkscape
MD5: 79e53cde43a91b14b97181c3eabc7f44 SHA-1: a7ad682885d5615d4e8e044c2a41d45b909bee71 SHA-256: 6d8cefe51e69f20d2b66314fb25c12833b087bb1cc3c3fbab3584c19df97b3c3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise, suggesting a phishing or content distribution attack.

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://million-minds.org/uploads/1/3/0/6/130620624/nekejup.pdf
    • http://unipolgroupfitness.com/uploads/1/3/0/2/130287919/titemaxofarej-jikiwofa.pdf
    • http://therhinestoneanchor.com/uploads/1/3/0/6/130639733/cafc519da7dce.pdf
    • http://jufo.toutusage.com/uploads/2020/01/28/e52352.pdf
    • http://gidikive.krsk-jalousie.ru/uploads/2020/01/28/muwukituguba.pdf
    • https://riramodisotake.weebly.com/uploads/1/3/0/4/130435862/2394753.pdf
    • http://vrkuzbass.online/uploads/2020/01/29/woxefadi.pdf
    • http://statewidefacilitiesservices.com/uploads/1/3/0/4/130435721/7f21243c0b5b.pdf
    • http://boxedandpotted.com/uploads/1/3/0/4/130483210/fabolu.pdf
    • http://nicoledreger.weebly.com/uploads/1/3/0/2/130287815/kokizobe.pdf
    • http://vuzoliz.leks-dveri.ru/uploads/2020/01/28/38e9bed7.pdf
    • http://bigwatervista.com/uploads/1/3/0/4/130436519/midikez.pdf
    • http://mountaintownplanners.org/uploads/1/3/0/4/130483939/biwamovedo-wijam-gavelavosefukef.pdf
    • http://wuwodaw.ngochastore.com/uploads/2020/01/28/pipuvek_tasoton_rodurenenevogo_visuvawi.pdf
    • http://misbailes.com/uploads/1/3/0/4/130483587/130483587.html#e+harmonic+minor+scale+tab

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129c.bin
bddafb1b8a1b1641c595d799fded8e9f788afdfc8a3d2960679cf700fa812006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129C 7660 bytes

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