Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f959d6ce02090af…

MALICIOUS

PDF

47.9 KB Authoring application: pdf-parser
MD5: 0ed94df236f3bcfafe317847dc6348e3 SHA-1: 9db0cb5914c4b0daf226492014f4f17f84e5d302 SHA-256: 7f959d6ce02090af044dedb3d38fd282250ddabc71958e006a21d5f028f11cdc
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded URLs, such as 'http://hjgemologicallab.com/uploads/1/3/0/2/130272937/9541529.pdf', are part of a large collection of external links designed to appear as SEO content. This pattern is commonly used for phishing or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://hjgemologicallab.com/uploads/1/3/0/2/130272937/9541529.pdf
    • http://qmenthailand.com/uploads/1/3/0/7/130775440/samijetolas.pdf
    • http://nrtusa.com/uploads/1/3/0/6/130639648/dedog.pdf
    • http://boisescarpetcleaners.com/uploads/1/3/0/2/130287960/mipuzeteziwurodaj.pdf
    • http://boxinsideabox.com/uploads/1/3/0/5/130550876/nefesojunisige.pdf
    • http://clubof.club/uploads/1/3/0/7/130740504/mabuvozevikuku_vetusunamofig_bexosepi_gefanalenimiku.pdf
    • http://blackoakfamilyfarm.com/uploads/1/3/0/2/130273801/1a05b0.pdf
    • http://hostmaster.napiercounselling.co.uk/uploads/1/3/0/7/130776185/kokumubewipodazajito.pdf
    • http://www.bonusbaseballtours.com/uploads/1/3/0/6/130604775/dutebanapug_bumovo_vawelibegivomu_fopeba.pdf
    • http://www.livingculture.co/uploads/1/3/0/2/130272804/deragomovuxi_peparig.pdf
    • http://danceofthemagi.com/uploads/1/3/0/3/130323515/4be0d6bd9522026.pdf
    • http://stephteachesela.org/uploads/1/3/0/3/130379362/369c0f7.pdf
    • http://grandmaisthenewblack.com/uploads/1/3/0/6/130639307/nuratetusebevejup.pdf
    • http://coolboymusic.us/uploads/1/3/0/2/130272095/6081596.pdf
    • http://www.fibedoctor.com/uploads/1/3/0/6/130639605/1130528.pdf
    • http://chanaconsulting.net/uploads/1/3/0/5/130538833/9797588.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/5/130540725/130540725.html#definition+total+quality+management+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f57.bin
35139631c2f62b3a1f7a10a07db5ee45c10e43e059f74093eb94e0e0e660ea80
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F57 8336 bytes