Malicious PDF — malware analysis report

Static analysis result for SHA-256 4567efeb3495a38d…

MALICIOUS

PDF

49.8 KB Authoring application: Pdftk
MD5: 4f2a5f3104162ccb2eb1c435ce2146de SHA-1: 0b9a56532ff8bdd82cb6b23c0f61f12aa1959163 SHA-256: 4567efeb3495a38d64be110af28a3be14f24f94f571a1e783a0b2df4363f04da
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This technique is commonly used for SEO poisoning or phishing campaigns to drive traffic to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent related to traffic redirection or phishing.

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://balloonsoverbranson.com/uploads/1/3/0/7/130739373/fotorawok.pdf
    • http://devcaribe.com/uploads/1/3/0/6/130604547/gumowosuzoje-vizatajuresu-jimoligusagena-jagazajitudo.pdf
    • http://buxufe.uzv-rf.ru/uploads/2020/01/28/38e18f345b.pdf
    • https://buwigonesopoxiv.weebly.com/uploads/1/3/0/2/130272084/nedumowetimimunile.pdf
    • http://vietmoviewatch.club/uploads/2020/01/29/9256013.pdf
    • http://baylaurelgroup.com/uploads/1/3/0/2/130289236/4cf8c676ec08.pdf
    • http://coachfro.com/uploads/1/3/0/6/130639281/469632af97ddf4.pdf
    • http://nolagirlcustomcreations.com/uploads/1/3/0/2/130272925/be299b.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/6/130620176/130620176.html#raymond+buckland+complete+book+of+witchcraft

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000125c.bin
dea7499778791eba56076f1fd1941c6a76cf4fcace86176ecbe1f6c992d67287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125C 8592 bytes
font_01_sfnt_off000088db.bin
87fd6b1a35a64f5c2d30902eea89631a9c05d6b36ef70c6d0cee4d2ad867525e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88DB 2596 bytes

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