Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b15f66ebc6ecdf…

MALICIOUS

PDF

43.1 KB Authoring application: PDFedit
MD5: 1762850da5d0986bc17ba6142741a878 SHA-1: 028e90296e88dad80b012e05676ee73997dad2b2 SHA-256: 52b15f66ebc6ecdff4e976c47635b62813c3ffa475d5e1b4127931ac9c2d4407
150 Risk Score

Malware Insights

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

The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external PDF links, with the first one pointing to veteranshealthfoundation.com. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs suggest a phishing or malware distribution campaign, aiming to redirect users to malicious content hosted on multiple domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://veteranshealthfoundation.com/uploads/1/3/0/3/130313057/989726e7daf4622.pdf
    • http://cpsplantscapes.com/uploads/1/3/0/4/130476703/kerajelepudimaxeje.pdf
    • http://vixisiwev.bestshop10.ru/uploads/2020/01/28/e3652765.pdf
    • http://perawa.fuse0000.online/uploads/2020/01/28/nepikuzedozegosamex.pdf
    • http://noramanca.com/uploads/1/3/0/3/130313155/nijozutetujir.pdf
    • https://tewozonixub.weebly.com/uploads/1/3/0/6/130604110/dagetasalujidiwu.pdf
    • http://moycar.pro/uploads/2020/01/29/84561.pdf
    • http://lafupa.paulandkelsey.com/uploads/2020/01/28/texonegu_potudozegaxog_nusaliw.pdf
    • http://cyclebavaria.com/uploads/1/3/0/2/130272932/130272932.html#your+game+booster+pro+apk

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001240.bin
873b3265ba880d9c417c869c4918ec70885a2e17e812402030c81a263d401487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1240 9336 bytes
font_01_sfnt_off0000589c.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x589C 2604 bytes
font_02_sfnt_off00006144.bin
677e71428f97d697e1d37b94920902cc1f79d6c40420e53eae369df573da2ac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 16192 bytes

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