Malicious PDF — malware analysis report

Static analysis result for SHA-256 b56cb5484be73d11…

MALICIOUS

PDF

15.9 KB Created: 2019-04-30 02:34:52 +01:00 Authoring application: mPDF 5.7
MD5: f4626f01aca59301566f0262fa9954b3 SHA-1: febab7fd558010fc8ad6933207ba3ce6aa680bf2 SHA-256: b56cb5484be73d117da4a99fa488389091f16be2bdc3c725cc568111d094bf66
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious. While the specific URLs appear to link to travel guides, the sheer volume and the heuristic firing indicate a malicious intent to drive traffic to the dominant host, xiixmcuin.linkpc.net.

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://xiixmcuin.linkpc.net/8203207206207207/Norv-ge-3---Oslo-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/9201202205200205/Lonely-Planet-The-World-A-Traveller-s-Guide-to-the-Planet-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/1200209208201204202/Lonely-Planet-s-Ultimate-Travel-Our-List-of-the-500-Best-Places-to-See-Ranked-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/5209201206203202/Lonely-Planet-Naples-Pompeii-amp-the-Amalfi-Coast-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/9202200209203209/Lonely-Planet-Sri-Lanka-Phrasebook-Lonely-Planet-Phrasebook-India-by-Margit-Meinhold.pdf
    • http://xiixmcuin.linkpc.net/9206205207208201/Lonely-Planet-Japan-Tokyo-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/3205204205203204/Lonely-Planet-Walking-in-Spain-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/4203208209200200/Wales-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/6208208201208203/Ouest-am-ricain-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/1201204207203206209/Lonely-Planet-Reisef-hrer-Irland-by-Fionn-Davenport.pdf
    • http://xiixmcuin.linkpc.net/8203207209204204/Norv-ge-3---Bergen-et-les-fjords-du-Sud-Ouest-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/4204205204207207/City-Trails---Paris-by-Lonely-Planet-Kids.pdf
    • http://xiixmcuin.linkpc.net/7200208202205206/Lonely-Planet-Bushwalking-in-Papua-New-Guinea-by-Yvon-Perusse.pdf
    • http://xiixmcuin.linkpc.net/6200203206208207/Lonely-Planet-Ethiopia-Djibouti-Somaliland-by-Jean-Bernard-Carillet.pdf
    • http://xiixmcuin.linkpc.net/3208203203208202/Thailand-Vietnam-Laos-amp-Cambodia-Travel-Atlas-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/4203207202205208/Unpacked-Travel-Disaster-Stories-by-Tony-Wheeler-and-Other-Lonely-Planet-Authors-by-Tony-Wheeler.pdf
    • http://xiixmcuin.linkpc.net/8204204206203204/Maroc-9---Comprendre-le-Maroc-et-Maroc-pratique-by-Lonely-Planet.pdf
    • http://xiixmcuin.linkpc.net/8207204209204/Police-Oslo-Sequence-8-by-Jo-Nesb-.pdf
    • http://xiixmcuin.linkpc.net/6208207202208200/From-Oslo-to-Trondheim-by-Gamlem-Thoralf.pdf
    • http://xiixmcuin.linkpc.net/3207205205202205/From-Oslo-to-Iraq-and-the-Road-Map-Essays-by-Edward-W-Said.pdf

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