Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f1953d62ac9506…

MALICIOUS

PDF

36.7 KB Authoring application: Karbon
MD5: 223735d1e2ea4243f913c3a32d04f876 SHA-1: 99b40d0f8df29db888d29e2309a9a4364dc41206 SHA-256: 33f1953d62ac9506a7f2286be7daa12f72c929db740a3cd1924dcc3b2ed0388f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to other PDF files, a technique commonly used for SEO poisoning or distributing malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, suggesting the document's purpose is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://eventipedia.com/uploads/1/3/0/4/130436299/62879fe765a5034.pdf
    • http://www.bhcgobgyn.com.au/uploads/1/3/0/8/130873943/2405766.pdf
    • http://babaanddada.com/uploads/1/3/0/6/130605019/jegubilufapud.pdf
    • http://comalcommunityband.net/uploads/1/3/0/2/130289220/fujubad.pdf
    • http://as13.com/uploads/1/3/0/5/130544243/5dd799d25c1b.pdf
    • http://dannylife.co.uk/uploads/1/3/0/3/130323465/zupezison.pdf
    • http://jamesorourkelaw.com/uploads/1/3/0/3/130379583/3885729.pdf
    • http://tanyavendelbo.dk/uploads/1/3/0/5/130543941/2354503.pdf
    • http://mistersack.net/uploads/1/3/0/5/130539432/6cb845e.pdf
    • http://www.outmiami.foundation/uploads/1/3/0/4/130475989/65f9188fafe2db3.pdf
    • http://www.misscarpenter.info/uploads/1/3/0/8/130874539/338140.pdf
    • http://ictforpeace.com/uploads/1/3/0/6/130604602/selegisowuf-gubedamop.pdf
    • http://acceligen.org/uploads/1/3/0/2/130289380/6086088.pdf
    • http://wildbeesboutique.com/uploads/1/3/0/6/130604939/lipigobe.pdf
    • http://ciencia-sociedad.org/uploads/1/3/0/5/130588289/5690584.pdf
    • http://www.slsuperior.com/uploads/1/3/0/7/130738537/4abf6c.pdf
    • http://www.tokyowellbeing.com/uploads/1/3/0/2/130273582/8352fb8b027f.pdf
    • http://digidealsapp.com/uploads/1/3/0/6/130639669/7831644.pdf
    • http://canberrabreathwork.com/uploads/1/3/0/5/130540290/9885582.pdf
    • http://theothertd.com/uploads/1/3/0/6/130604423/130604423.html#the+official+sat+study+guide+2020+edition+pdf+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f64.bin
6e22d8b1612d155dfda953f0a4fbf70bd133fba48f928e312d74ae24a9e8843e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F64 8492 bytes