Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f954e9eade783f…

MALICIOUS

PDF

52.6 KB Authoring application: Mobipocket Creator
MD5: e8bdfd816846d53c92dfaeb99f70df96 SHA-1: 7f73814bdbdfc7f176d761dde84764ae6effdf7d SHA-256: 87f954e9eade783f75505bf040f0f76b9769a56d071b08a1f7fe782266b8d610
182 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm, and explicitly requests sensitive recovery information such as private keys or backup codes. This behavior is consistent with phishing or credential harvesting attempts. The ClamAV detection further supports its malicious nature.

Heuristics 4

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://mybest30minutes.com/uploads/1/3/0/5/130588948/mepotikonatizix-kajipukonil-lapesafidebek-migejilijotoxo.pdf
    • http://peppermintskyranch.com/uploads/1/3/0/4/130483138/gulituse.pdf
    • http://tappycard.io/uploads/1/3/0/5/130588606/563850.pdf
    • http://resolute-sf.com/uploads/1/3/0/3/130313086/dea6df30041f0.pdf
    • http://kubukusu.bigdigitag.com/uploads/2020/01/29/babidijalegiwa.pdf
    • http://solanii.com/uploads/1/3/0/5/130543536/xosejerupapopukodilu.pdf
    • http://mivug.tierheilbehandlung.com/uploads/2020/01/28/4770697.pdf
    • http://ruki.rapmo.ru/uploads/2020/01/27/tugowiriz.pdf
    • http://txa4d.com/uploads/1/3/0/3/130379298/lerolepen.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/3/130323723/130323723.html#blockchain+for+dummies+filetype+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000117b.bin
d46c7eac235d7d3e52219c39e5f36adf3e103e19dab341d9d478dfa7c70e94d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117B 8652 bytes

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