Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be65aa4be1afb81…

MALICIOUS

PDF

15.9 KB Created: 2019-05-02 01:44:01 +01:00 Authoring application: mPDF 5.7
MD5: a9fd7305ddc542571faffde185e30594 SHA-1: ab823af0638a7166bf1aaf9301bf10abfddc6b84 SHA-256: 3be65aa4be1afb81b40b5605ba1352bf13eadde5d0dff5c0949364b3fce6ec5c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, many of which point to numeric slugs on the 'loaminoo.linkpc.net' domain. This suggests a link farm or SEO manipulation tactic, potentially used to distribute further malicious content or to obscure the true malicious destination. The document body was unreadable, but the presence of numerous links is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

Heuristics 2

  • 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.
  • 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://loaminoo.linkpc.net/1092090090098/Rekindled-Fountain-Creek-Chronicles-1-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/1091097094094/Within-My-Heart-Timber-Ridge-Reflections-3-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/1091092097090/A-Note-Yet-Unsung-Belmont-Mansion-3-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/4093090091091095/To-Whisper-Her-Name-A-Belle-Meade-Plantation-Novel-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/5097090091093/From-a-Distance-Timber-Ridge-Reflections-1-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/1098091090097095/Rekindled-Revealed-Remembered-Fountain-Creek-Chronicles-1-3-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/2097097090099091/Fountain-Creek-Chronicles-Fountain-Creek-Chronicles-1-3-by-Tamera-Alexander.pdf
    • http://loaminoo.linkpc.net/1099094097097097/The-Other-Inheritance-Inheritance-1-by-Rebecca-Jaycox.pdf
    • http://loaminoo.linkpc.net/5098099092094/Gone-Fishing-A-Novel-in-Verse-by-Tamera-Will-Wissinger.pdf
    • http://loaminoo.linkpc.net/2097098091096091/Soldier-s-Heart-Cry-of-Freedom-13-by-Tamera-Lynn-Kraft.pdf
    • http://loaminoo.linkpc.net/3096093092093095/Growing-Room-For-Life-in-Tight-Places-by-Tamera-Rehnborg.pdf
    • http://loaminoo.linkpc.net/9095094092093096/Jugendbriefe-Alexander-Von-Humboldts-an-Wilhelm-Gabriel-Wegner-by-Alexander-von-Humboldt.pdf
    • http://loaminoo.linkpc.net/9095097090092098/The-Official-Letters-of-Alexander-Spotswood-Lieutenant-Governor-of-the-Colony-of-Virginia-1710-1722-Vol-1-by-Alexander-Spotswood.pdf
    • http://loaminoo.linkpc.net/6096092098091091/Inheritance-by-Christopher-Paolini.pdf
    • http://loaminoo.linkpc.net/5090093096095091/The-Inheritance-by-Louisa-May-Alcott.pdf
    • http://loaminoo.linkpc.net/8092090099096095/The-Inheritance-by-Mika-Lane.pdf
    • http://loaminoo.linkpc.net/5091097095093099/The-Bowes-Inheritance-by-Pam-Lecky.pdf
    • http://loaminoo.linkpc.net/3099098093094091/The-Inheritance-by-Irina-Shapiro.pdf
    • http://loaminoo.linkpc.net/1092092096092094/The-Inheritance-by-Irina-Shapiro.pdf
    • http://loaminoo.linkpc.net/2092091090098096/The-Inheritance-by-Robin-Hobb.pdf

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