Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e68f81d47767fa…

MALICIOUS

PDF

64.7 KB Authoring application: Mobipocket Creator
MD5: e69c0ecd70ae22a80db4410d754f53e4 SHA-1: 5aadd39cd56031f34c96b52698006a3bd578ea81 SHA-256: c7e68f81d47767fa58f9976a3e66ec7f2378774f61d1fb6b51b115e13c58032a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing or traffic-robot installer. The document contains a large number of embedded external links, forming a link farm, which is a common technique for distributing phishing lures or redirecting users to malicious sites. The primary heuristic, PDF_SEO_LINK_FARM, indicates a mass of external PDF links, with the first identified URL being http://myemilyknight.org/uploads/1/3/0/6/130639678/097d77bf8543.pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://myemilyknight.org/uploads/1/3/0/6/130639678/097d77bf8543.pdf
    • http://teachersofeg.com/uploads/1/3/0/4/130476624/serila.pdf
    • http://cavumcloud.com/uploads/1/3/0/6/130621305/lagenirotarul.pdf
    • http://mokuvizi.remont-msk4.icu/uploads/2020/01/28/3956564.pdf
    • http://xiz.onlinehelp-myaccount.net/uploads/2020/01/28/tujijofixexe.pdf
    • http://nathallybastos.com/uploads/1/3/0/6/130639689/supejese_repebiwexe.pdf
    • http://tomevajife.pekam.su/uploads/2020/01/29/2d16402f0a41a9.pdf
    • http://pamelacowan.com/uploads/1/3/0/6/130603789/lelovapuzofilep.pdf
    • http://pekukate.kovry-angora.ru/uploads/2020/01/27/zibojufelaladigoja.pdf
    • https://vogizojosuw.weebly.com/uploads/1/3/0/4/130483513/robopidizedafej_lakijomupog_vavigepidatinuv_gewalanotoko.pdf
    • http://centrestagedanceacademy.com/uploads/1/3/0/4/130476129/6849154.pdf
    • http://ohiobiplanes.com/uploads/1/3/0/5/130539357/62b3694.pdf
    • https://digetonuwonu.weebly.com/uploads/1/3/0/5/130588394/8292833.pdf
    • http://zapojoku.sellercentral-amazon-avs.com/uploads/2020/01/29/e0bc202b3263fb.pdf
    • http://southernparadisecatering.com/uploads/1/3/0/3/130323425/fbe24bdf97.pdf
    • http://msjarrell.com/uploads/1/3/0/6/130639831/fiwesejibon.pdf
    • http://northwestpolebuildings.com/uploads/1/3/0/2/130271214/3357c73.pdf
    • https://tasulakizasi.weebly.com/uploads/1/3/0/5/130590279/gemin.pdf
    • http://myagent.pro/uploads/2020/01/28/230793.pdf
    • http://mytextsandhumanexperiences.com/uploads/1/3/0/6/130604585/8548150.pdf
    • http://jikapu.sber-home.info/uploads/2020/01/29/bawijomewawamavaw.pdf
    • http://bayesianupdate.com/uploads/1/3/0/5/130588937/rirusok_denuzi_jivedasewur.pdf
    • https://muzetikoxufam.weebly.com/uploads/1/3/0/4/130476385/b9f8e1443b.pdf
    • https://pabubilejoputi.weebly.com/uploads/1/3/0/5/130540645/varazegitefugi_dudakatel_jefuzevonum_gorule.pdf
    • http://yokel411.com/uploads/1/3/0/5/130590403/130590403.html#exercicis+d%27oracions+compostes+amb+solucions
    • http://jikapu.sber-ho

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001919.bin
eda908b3a5c15dfac9a1126dec776e5588af47151470fead5980ec4feafe5c59
pdf-font-stream PDF embedded font (sfnt) at offset 0x1919 9988 bytes