Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d80e978453baa8…

MALICIOUS

PDF

15.6 KB Created: 2019-04-30 04:43:14 +01:00 Authoring application: mPDF 5.7
MD5: ca234eadd7fedbe27e047c4e20965c31 SHA-1: 70a11c152749457e5049b28de6770d62e874a3a9 SHA-256: a7d80e978453baa8246e75ad8c5b72b53a6cb894a58c85497be9fa79b29b788d
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious. While the specific intent of the links is unclear due to their benign reputation, the overall structure and heuristic firings suggest a malicious PDF designed to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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://xiixmcuin.linkpc.net/6208201/Persephone-Daughters-of-Zeus-1-by-Kaitlin-Bevis.pdf
    • http://xiixmcuin.linkpc.net/2208202206205200/Love-amp-War-Daughters-of-Zeus-5-by-Kaitlin-Bevis.pdf
    • http://xiixmcuin.linkpc.net/2208202206205201/Aphrodite-Daughters-of-Zeus-4-by-Kaitlin-Bevis.pdf
    • http://xiixmcuin.linkpc.net/2203202209204206/Venus-Rising-Daughters-of-Zeus-6-by-Kaitlin-Bevis.pdf
    • http://xiixmcuin.linkpc.net/6206204209206203/The-Daughters-of-Persephone-A-Space-Opera-Special-Addition-The-Daughters-of-Persephone-1-4-by-J-R-Barrett.pdf
    • http://xiixmcuin.linkpc.net/3208202207209200/Siren-Song-by-Kaitlin-Bevis.pdf
    • http://xiixmcuin.linkpc.net/4207207201200206/Persephone-Falling-The-Persephone-Saga-1-by-Skyler-Grant.pdf
    • http://xiixmcuin.linkpc.net/4202209209202200/Young-Betjeman-by-Bevis-Hillier.pdf
    • http://xiixmcuin.linkpc.net/2200204203203200/Different-Daughters-A-History-of-the-Daughters-of-Bilitis-and-the-Birth-of-the-Lesbian-Rights-Movement-by-Marcia-M-Gallo.pdf
    • http://xiixmcuin.linkpc.net/2200205200200/It-Happened-One-Christmas-Hamilton-Sisters-3-by-Kaitlin-O-39-Riley.pdf
    • http://xiixmcuin.linkpc.net/4209206204207207/Fresh-at-Twenty-The-Oral-History-of-Mint-Records-by-Kaitlin-Fontana.pdf
    • http://xiixmcuin.linkpc.net/2201202208202204/The-Daughters-The-Daughters-1-by-Joanna-Philbin.pdf
    • http://xiixmcuin.linkpc.net/1205200206201208/Zeus-of-Ithome-by-T-E-Taylor.pdf
    • http://xiixmcuin.linkpc.net/8204208205200202/Zeus-Taken-by-Olympus-1-by-Celia-Aaron.pdf
    • http://xiixmcuin.linkpc.net/4201209206209/Zeus-Thunderbolt-from-the-Sky-by-Julie-M-Fenster.pdf
    • http://xiixmcuin.linkpc.net/6203202202205202/Dr-Zeus-in-the-Land-of-Chartreuse-by-MyHobby.pdf
    • http://xiixmcuin.linkpc.net/1201205202202200201/Zeus-Amoeba-by-David-Greenslade.pdf
    • http://xiixmcuin.linkpc.net/4206207207207200/The-Crown-of-Zeus-by-Christine-Norris.pdf
    • http://xiixmcuin.linkpc.net/4201203204206204/Persephone-and-Me-by-Corinne-Desjardins.pdf
    • http://xiixmcuin.linkpc.net/6206204209205203/Persephone-by-Kitty-Bennett.pdf
    • http://xiixmcuin.linkpc.net/22002

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