Malicious PDF — malware analysis report

Static analysis result for SHA-256 a592fbbc7118a998…

MALICIOUS

PDF

13.9 KB Created: 2019-04-30 02:43:59 +01:00 Authoring application: mPDF 5.7
MD5: cea4293a188105be7dfd1b11ad835340 SHA-1: bb145b6d6a31f30e4e773f45501787a7de57ec84 SHA-256: a592fbbc7118a998166642f2a173035f54f4b0037194926b3d0999756cba31bd
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/7097098097094090/Celina-The-Connelly-Cousins-1-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/7097098097094093/Johnny-The-Connelly-Cousins-2-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099098094094/Letting-Go-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099098094097/Two-of-a-Kind-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099098090095/Five-Minute-Man-Covendale-1-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099098094095/Celestial-Desire-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099099092091/Vampire-Unaware-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1097092092097090/First-and-Only-Callaghan-Brothers-2-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099099091094/Wolf-Out-of-Water-Mythic-4-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/3092099093099097/Seeking-Vengeance-Callaghan-Brothers-4-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099099091095/The-Oracle-at-Mythic-Mythic-3-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1091097099098094093/Lost-in-Time-I-Lost-in-Time-1-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/1090098094095090097/EIN-GLANZ-anniversary-novel-by-Celina-Kihane.pdf
    • http://loaminoo.linkpc.net/9091093091097096/Imogen-Cunningham-by-Celina-Lunsford.pdf
    • http://loaminoo.linkpc.net/9097090091090092/Celina-Unsterblich-by-Daniela-Igelhorst.pdf
    • http://loaminoo.linkpc.net/2096090097091099/Warding-the-Covenants-by-Celina-Summers.pdf
    • http://loaminoo.linkpc.net/1090098094095090094/Convallaria-tears-EIN-GLANZ-by-Celina-Kihane.pdf
    • http://loaminoo.linkpc.net/1090097096094094092/Schlank-im-Schlaf-Die-perfekte-Di-t-by-Celina-Lux.pdf
    • http://loaminoo.linkpc.net/9097090091097093/Unsterblich-Bonnie-Amalia-Celina-by-Daniela-Igelhorst.pdf
    • http://loaminoo.linkpc.net/1091090098097090090/Raubzug-der-Barbaren---Es-gibt-kein-Entkommen-Band-5-Die-Barbarenbraut-by-Celina-Terrell.pdf

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