Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bcb7f8814b0996d…

MALICIOUS

PDF

44.0 KB Authoring application: pdf-parser
MD5: d7c515a28eef4d5bb635e4e1ebec2448 SHA-1: b00eb8d52063508ada420499c41c268c096952ad SHA-256: 0bcb7f8814b0996dd29cc037fecfcb12e561376c67c2d987565fae979fdb4c0e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF and HTML files. ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a high ML classifier score further indicate malicious intent. The embedded URLs are likely used to distribute further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dataerudite.com/uploads/2020/01/28/toborutufezuv_wikuren_ruvunopegiv_fitubedaxogad.pdf
    • http://myangeliccouture.com/uploads/1/3/0/3/130324440/5757626.pdf
    • http://mia-and-darrell.com/uploads/1/3/0/4/130488217/c36c4be7.pdf
    • http://dilmeersaj.com/uploads/1/3/0/7/130738863/surakim_vatebige.pdf
    • http://mrsteamparts.com/uploads/1/3/0/5/130547112/bajegumuzop.pdf
    • http://camp720.com/uploads/1/3/0/6/130639283/29fe762a3.pdf
    • http://clucktruckportland.com/uploads/1/3/0/8/130814118/130814118.html#poe+syndicate+blocking+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001146.bin
0917965b5e582ee3decf881245e81f6b5653d271902eb1bc458faefa4c9f2a02
pdf-font-stream PDF embedded font (sfnt) at offset 0x1146 8928 bytes