Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6370c4d83c2464b…

MALICIOUS

PDF

43.0 KB Authoring application: Inkscape
MD5: d9814e83482fdf88200c3b581f334498 SHA-1: 7a25c27a314820573bbecb8a033f590b5eeab3e5 SHA-256: f6370c4d83c2464b37b424a33d3f9083455a6a7c97cbdb822de441344f13322d
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a link farm and a high ML score, indicating malicious intent. The embedded URLs point to a large collection of external PDF files, suggesting a tactic to distribute malicious content or redirect users to phishing sites. No scripts were extracted, but the structure and URL patterns are consistent with SEO poisoning and traffic redirection campaigns.

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://trepimeister.com/uploads/1/3/0/4/130483989/lupurofuwo.pdf
    • http://newinsightfss.org/uploads/1/3/0/4/130488584/pinakukano.pdf
    • http://livevugami.rollosolar.com/uploads/2020/01/28/minazudegijixe.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/3/130313002/3695804.pdf
    • http://emilyranney.com/uploads/1/3/0/6/130604740/ralutigi_ganugeromugu_semavajekibagid.pdf
    • http://rib.k-alinka.ru/uploads/2020/01/28/sixiri.pdf
    • http://dumotisaf.kavkaz-car.ru/uploads/2020/01/28/16aea2.pdf
    • http://buildingonbookspodcast.com/uploads/1/3/0/7/130739524/5395691.pdf
    • http://regenerateyourauthenticnature.com/uploads/1/3/0/4/130483906/028b6.pdf
    • http://mysoundcollective.com/uploads/1/3/0/4/130488101/130488101.html#oftalmologia+clinica+kanski+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012e2.bin
8d587f910b96fc78d1518982ad15a02a1efeb6a46745920c45ce7ab58900fdd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E2 10668 bytes
font_01_sfnt_off00006022.bin
c7143368894299a997ed09f05024df052d964886bc902d598de4a6791c50751f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6022 10292 bytes