Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94c8c372d33279d…

MALICIOUS

PDF

42.4 KB Authoring application: Mobipocket Creator First seen: 2020-08-25
MD5: f37dc1eb688ffa6eb887781931a8c50c SHA-1: ae4c1601cc5bca522b5fc2a99468d4c9335fa886 SHA-256: d94c8c372d33279d68fac67faceb5a6936bbdf4894eea18b57c3897c633e73ac
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary IOCs are the numerous URLs pointing to external PDF resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://wedatoj.store/uploads/1/3/0/7/130739315/2450237.pdf In PDF document text
    • http://wiseonreading.com/uploads/1/3/0/8/130873810/1563237.pdfIn PDF document text
    • http://kathiegreenmedia.com/uploads/1/3/0/6/130639172/2333573.pdfIn PDF document text
    • http://www.csiasia.org/uploads/1/3/0/4/130488165/jafevasu-nowosutexadeva-sunadiji.pdfIn PDF document text
    • http://www.denebebbington.co.uk/uploads/1/3/0/8/130874250/2473245.pdfIn PDF document text
    • http://benlasli.store/uploads/1/3/0/2/130289241/5477797.pdfIn PDF document text
    • http://cityonahillcommunityoutreach.org/uploads/1/3/0/7/130775013/8245123.pdfIn PDF document text
    • http://nursesdirectllc.com/uploads/1/3/0/6/130639291/mawapazatukoruwipilo.pdfIn PDF document text
    • http://absoluteventoparty.com/uploads/1/3/0/6/130603673/fajezo-bitim-sateritolokelo.pdfIn PDF document text
    • http://laurelmedpa.com/uploads/1/3/0/6/130639800/d3ee27a.pdfIn PDF document text
    • http://fertilitymassagebristol.com/uploads/1/3/0/4/130477228/fulisik.pdfIn PDF document text
    • http://bbvillahallau.com/uploads/1/3/0/7/130739885/87d75c5a234030.pdfIn PDF document text
    • http://autoconn.com/uploads/1/3/0/3/130379610/nerekamagekabutisu.pdfIn PDF document text
    • http://arroyoink.com/uploads/1/3/0/6/130621805/1522175.pdfIn PDF document text
    • http://centerforculturalfitness.org/uploads/1/3/0/2/130270745/tutakaxepotaxep-babudi-kubujatofuzito-fukeb.pdfIn PDF document text
    • http://zerno.tatar/uploads/1/3/0/7/130739860/c1c7e8a9a.pdfIn PDF document text
    • http://k-statebasketballplayers.net/uploads/1/3/0/5/130551083/7906434.pdfIn PDF document text
    • http://jvwritingv3.club/uploads/1/3/0/7/130776609/252fed142576.pdfIn PDF document text
    • http://brucedaleestate.com/uploads/1/3/0/6/130621119/gatitiba.pdfIn PDF document text
    • http://subscription-biling-spotlfy.com/uploads/1/3/0/7/130776252/rebonizu_zeziba.pdfIn PDF document text
    • http://advancedliferesources.com/uploads/1/3/0/7/130739621/volirabifa.pdfIn PDF document text
    • http://choptallybarber.shop/uploads/1/3/0/6/130639924/texisirebaj.pdfIn PDF document text
    • http://www.tannerbrewing.com/uploads/1/3/0/5/130539652/watubixetuw_gogilosawonomu_tutezim.pdfIn PDF document text
    • http://www.hillaryplog.com/uploads/1/3/0/5/130550752/130550752.html#hydraulic+scissor+lift+table+catalogueIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3357 2596 bytes
SHA-256: 87fd6b1a35a64f5c2d30902eea89631a9c05d6b36ef70c6d0cee4d2ad867525e
font_01_sfnt_off00003f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F56 9116 bytes
SHA-256: bc5d08cd66fbd6d9ee49877d5fad9beae8e26459906c7ff4dc5263a8e35cd786

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