Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34da20daa82996e…

MALICIOUS

PDF

40.6 KB Authoring application: OpenOffice.org First seen: 2020-12-25
MD5: eb55ea538e285616e7f723b40a34ab8e SHA-1: c69f49ac4b4e0b9f4199b85771180074e6370f6d SHA-256: d34da20daa82996e6b447206e068d351243d38857c99b09622f6fb51656491d6
212 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm, and specifically a credential phishing lure impersonating 'apple'. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs likely lead to malicious sites designed to steal user credentials or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector http://capoeiramandarafrance.weebly.com/uploads/1/3/0/3/130379291/f3ba78c3bb51b.pdf.
  • 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://cs-chloe.ru/uploads/2020/01/29/1729358.pdf In PDF document text
    • http://affordablevisualconcepts.com/uploads/1/3/0/4/130476050/9620478.pdfIn PDF document text
    • http://capoeiramandarafrance.weebly.com/uploads/1/3/0/3/130379291/f3ba78c3bb51b.pdfIn PDF document text
    • http://statbrutedebowl.com/uploads/2020/01/27/6c24c.pdfIn PDF document text
    • http://weefca.com/uploads/1/3/0/6/130620159/54d8e9cea.pdfIn PDF document text
    • http://goboost.us/uploads/1/3/0/4/130488096/5775640.pdfIn PDF document text
    • https://kajiniben.weebly.com/uploads/1/3/0/2/130289772/mafigefesivepe.pdfIn PDF document text
    • http://nextripchile.com/uploads/1/3/0/2/130270977/sejov.pdfIn PDF document text
    • http://buzzboxguitars.com/uploads/1/3/0/5/130550846/130550846.html#adb+frp+bypass+tool++freeIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1153 8268 bytes
SHA-256: b3e65a466b1dab541abbb6a996e50f3c9fea58a421714584a098d7104180d33e

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