Malicious PDF — malware analysis report

Static analysis result for SHA-256 91b2060dc91b3eef…

MALICIOUS

PDF

43.0 KB Authoring application: Solid Converter PDF First seen: 2020-09-24
MD5: 2ec3810d3a449d22b4b909f8c8287f11 SHA-1: 564cdde4032af796cf58dd2fcfa6854df0c23488 SHA-256: 91b2060dc91b3eef7129aa1e44d3d0663a62c713f3e6a70c62786feb355766b1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or redirection campaign. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://krhphotography.com/uploads/1/3/0/4/130475939/tefemubunizijojibu.pdf In PDF document text
    • http://www.lephokastro.com/uploads/1/3/0/4/130489220/luvarobegeneta-kufagoguz-pobonokal.pdfIn PDF document text
    • http://quotex.fr/uploads/1/3/0/4/130489247/funes.pdfIn PDF document text
    • http://susanpultman.com/uploads/1/3/0/5/130538922/jiweberunibofe.pdfIn PDF document text
    • http://www.caymanease.org/uploads/1/3/0/6/130639304/e2c14.pdfIn PDF document text
    • http://norfolkeyephysiciansandsurgeons.com/uploads/1/3/0/4/130483836/vupulolejomodopas.pdfIn PDF document text
    • http://mhballhockey.com/uploads/1/3/0/2/130287314/wotoduje.pdfIn PDF document text
    • http://magnificentweedseeds.ca/uploads/1/3/0/4/130488073/6653729.pdfIn PDF document text
    • http://leannephilip.com/uploads/1/3/0/3/130323415/4881781.pdfIn PDF document text
    • http://exhibit-graphics.com/uploads/1/3/0/6/130639498/2102256.pdfIn PDF document text
    • http://donaldokie.org/uploads/1/3/0/6/130639350/peweloxizenag.pdfIn PDF document text
    • http://marriagepriority.com/uploads/1/3/0/8/130814040/c9bbea210.pdfIn PDF document text
    • http://riverrepublicproductions.com/uploads/1/3/0/5/130545097/bubelufonimowane.pdfIn PDF document text
    • http://www.pistacchioweddingphotography.com/uploads/1/3/0/7/130740623/relobejuxeluli-nopituzuj-gakobonava-fifarele.pdfIn PDF document text
    • http://greenchicbeauty.com/uploads/1/3/0/6/130605493/kafofilo.pdfIn PDF document text
    • http://mayaoak.club/uploads/1/3/0/2/130273740/nabuxamepaxov.pdfIn PDF document text
    • http://imgmfr.com/uploads/1/3/0/7/130775435/3328832.pdfIn PDF document text
    • http://dopeshoppingmadeeasy.com/uploads/1/3/0/4/130488662/7600343.pdfIn PDF document text
    • http://aguire-senior-ph-1.rominastiebenphotography.com/uploads/1/3/0/6/130620505/130620505.html#5+muscles+of+the+anterior+abdominal+wallIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000335e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x335E 17188 bytes
SHA-256: 19edfbab2bb15d2e26d6d1679a76a5b782c93f129735998892192036178bf24e
font_01_sfnt_off00004cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD2 7144 bytes
SHA-256: bd1a9aa368e5ca5330d2e5c43fe7368bcad1c6229461de02af2922cd7c17eeb7