Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e878e3648fb609…

MALICIOUS

PDF

42.4 KB Authoring application: LibreOffice First seen: 2020-09-07
MD5: cec2efb50c2c89980a06320235b23b10 SHA-1: 7ef4203b98e205648544d67b57e6c67ae646c954 SHA-256: c3e878e3648fb60969836578999500adce727d82983d2f8c80097891f133083c
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 hosted on various domains. This technique is often used for SEO spam or to distribute further malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious with high confidence.

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://rpprojects.be/uploads/1/3/0/3/130324063/sumoruj.pdf In PDF document text
    • http://www.harrisonsmith.co/uploads/1/3/0/7/130740330/ruvenolefa.pdfIn PDF document text
    • http://johngeneralconstruction.com/uploads/1/3/0/4/130476878/3153520.pdfIn PDF document text
    • http://declareyourday.com/uploads/1/3/0/2/130272932/ea8c33a.pdfIn PDF document text
    • http://ryan-foster.com/uploads/1/3/0/5/130540937/3432262.pdfIn PDF document text
    • http://edtechieteacher.com/uploads/1/3/0/2/130288642/cb88c.pdfIn PDF document text
    • http://myremtec.com/uploads/1/3/0/5/130538956/mejowag.pdfIn PDF document text
    • http://webmail.luxor-bg.com/uploads/1/3/0/6/130604765/d67f36a64ae6c.pdfIn PDF document text
    • http://www.improveyourvoice.net/uploads/1/3/0/3/130323342/lupirazowokilafobam.pdfIn PDF document text
    • http://bestquotesdaily.com/uploads/1/3/0/4/130483623/6804802.pdfIn PDF document text
    • http://www.nathaniel-e-yamamoto.com/uploads/1/3/0/6/130604232/cac6a136230d3d.pdfIn PDF document text
    • http://menschwork.com/uploads/1/3/0/6/130604715/dixevo.pdfIn PDF document text
    • http://aguayoperformance.com/uploads/1/3/0/5/130543368/loruseregatexe-zovamazu.pdfIn PDF document text
    • http://proarbtreeservices.com.au/uploads/1/3/0/7/130739524/nekarekewi-jumagirazoja.pdfIn PDF document text
    • http://webdisk.vua.no/uploads/1/3/0/8/130874240/5414841.pdfIn PDF document text
    • http://casey-family.rominastiebenphotography.com/uploads/1/3/0/9/130969960/130969960.html#esl+past+tenses+worksheetIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00003252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3252 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d
font_01_sfnt_off00004a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A26 8160 bytes
SHA-256: 99d6c0aa33e02b907b854af60cd6e60a7eeb19bf1d36302382c7a2500e8641fc

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