Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7f861e90fccb26…

MALICIOUS

PDF

39.6 KB Authoring application: OpenOffice.org First seen: 2020-09-24
MD5: 7bbf221f1020a0d6dafcb44d65b97329 SHA-1: f776085818b93cc318e4714530b99f59a9a8d051 SHA-256: 7a7f861e90fccb26ee0beaad43e7f2b5bb9e5dcd9771d5fdeffceac7bce0f957
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 commonly used for SEO spam or to distribute malicious content. ClamAV detected this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and an ML classifier also flagged it as malicious. The document body itself is heavily obfuscated and contains many of these URLs, reinforcing the malicious intent.

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://muscatmassage-service.com/uploads/1/3/0/6/130639343/rukedenases-gopulivefuvupan.pdf In PDF document text
    • http://leaguecitytreeservice.com/uploads/1/3/0/5/130539886/ab4e5.pdfIn PDF document text
    • http://gaw.quickly-loans.info/uploads/2020/01/27/c5e9f6.pdfIn PDF document text
    • https://xadigavifakajof.weebly.com/uploads/1/3/0/5/130551957/da18d40460.pdfIn PDF document text
    • https://viziravojal.weebly.com/uploads/1/3/0/5/130590663/5706177.pdfIn PDF document text
    • http://wilsonfarmmurfreesboro.com/uploads/1/3/0/3/130312912/7619103.pdfIn PDF document text
    • http://sonat.2206bumps04.fun/uploads/2020/01/28/9650416.pdfIn PDF document text
    • http://keju.leadbeat.online/uploads/2020/01/28/611fda36f81546.pdfIn PDF document text
    • http://myshecollectiononline.com/uploads/1/3/0/6/130639815/8270060.pdfIn PDF document text
    • http://allacadenza.com/uploads/1/3/0/5/130551475/lodibibipaxalawen.pdfIn PDF document text
    • http://mori.igrovye-avtomaty-na-dengi.top/uploads/2020/01/28/vosudamir.pdfIn PDF document text
    • http://thestudyhouse.org/uploads/1/3/0/2/130271165/c544754a6.pdfIn PDF document text
    • http://baguwuli.your-ra.ru/uploads/2020/01/27/nevinevizopejof.pdfIn PDF document text
    • http://red4edactionnc.com/uploads/1/3/0/5/130588222/ec43367ab.pdfIn PDF document text
    • http://andreablackerby.com/uploads/1/3/0/4/130435833/tebajixowareru-mutifusetes-dalapemizabo.pdfIn PDF document text
    • http://jasu.asusbot.ru/uploads/2020/01/27/vinaxenobuse-zajusamodazefer-zokolediwivog-kesedovomamavip.pdfIn PDF document text
    • http://psychotherapy121.org/uploads/1/3/0/3/130379581/8267493.pdfIn PDF document text
    • http://mercymedicalarts.com/uploads/1/3/0/4/130488252/3173127.pdfIn PDF document text
    • http://targetspirit.com/uploads/1/3/0/3/130324126/kukeginobu-ramiparadaser.pdfIn PDF document text
    • http://egitimcilerdenbatikhikayeler.com/uploads/1/3/0/2/130270738/jusajem.pdfIn PDF document text
    • http://mariaflights.com/uploads/2020/01/28/5ad82bcd773.pdfIn PDF document text
    • http://xujotupiko.albertoleno.com/uploads/2020/01/28/bijat.pdfIn PDF document text
    • http://kristinw.com/uploads/1/3/0/3/130313613/9433066.pdfIn PDF document text
    • http://juliejesternewman.com/uploads/1/3/0/3/130323929/130323929.html#shaggy+angel+videoIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000170c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170C 8744 bytes
SHA-256: 9d5e4cff2d1f89fc69742e3bc84d7e6a10968f6c4e686907b85e1b746b174a25