Malicious PDF — malware analysis report

Static analysis result for SHA-256 214fbef8e67b9452…

MALICIOUS

PDF

76.3 KB Created: 2021-03-22 16:13:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 270aec9aaa09490dd49bc52b895d1bc0 SHA-1: e0e0ef54b4436b050ff15a06e671f1dcf7adbb97 SHA-256: 214fbef8e67b94529561eabcff8ef218f2a2038683ed4c26178fb52ae87fc6b9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan distribution attempt. It contains numerous external links, with one prominent link pointing to 'ponafet.ru', suggesting a link farm or phishing lure. The PDF also includes embedded JavaScript, which is likely used to redirect the user to the malicious URL or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://ponafet.ru/award?keyword=skripsi+pendidikan+agama+islam+tarbiyah.+pdf
    • https://kasewipiliri.weebly.com/uploads/1/3/4/9/134901701/7874002.pdf
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/8a7ac67ef9782a.pdf
    • https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/5569992.pdf
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/934ac60d2.pdf
    • https://titevajap.weebly.com/uploads/1/3/2/7/132741099/budipoxoso-xujituwabak-tedim-bufol.pdf
    • https://nupimixek.weebly.com/uploads/1/3/2/7/132712066/e22010a2d.pdf
    • https://bituxomixa.weebly.com/uploads/1/3/4/1/134131270/dulapopu-tilodoladim-xujorireze-pofowoda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ronatiduzoxij/video_cutter_app.pdf
    • https://2d841ef3-a248-4e6a-996b-2d54d6713fdd.filesusr.com/ugd/1decf9_4597ba496a5244888b7eb46160f27a0e.pdf?index=true
    • https://s3.amazonaws.com/lumixi/raxiparisanudeza.pdf
    • https://s3.amazonaws.com/vufuzewasi/cannot_resolve_androidschedulers.pdf
    • https://s3.amazonaws.com/galinikagopit/tifixonuxogisobovibofab.pdf
    • https://s3.amazonaws.com/sefepugolupalax/58631525388.pdf
    • https://s3.amazonaws.com/rivazixexuguri/madewalifofameva.pdf
    • https://7d7e9a41-1eea-4c72-a0b8-c0e3d642de37.filesusr.com/ugd/513cfa_d6b5be39833746deb880c1d6af1460c7.pdf?index=true
    • https://s3.amazonaws.com/wibadinavosunom/80481771158.pdf
    • https://s3.amazonaws.com/fosawef/32475540133.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001138b.bin
2ac9ac889202a35e1ff7dc7a59247e22ac51a1968bd3cdd1165015401f5b3268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1138B 5896 bytes

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