Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c57e05a0c38fc0…

MALICIOUS

PDF

20.7 KB Created: 2019-04-30 08:27:08 +01:00 Authoring application: mPDF 5.7
MD5: 011d193e56b2a93c26e1a847caf0f10a SHA-1: e192aca68994f083b14da6b668950fb0c820c20c SHA-256: 89c57e05a0c38fc0ce6d45d68a318565b091e26f46b74bf9618c7567f0071ece
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While most of these links point to benign-looking book titles, the sheer volume and the ML_NYX_PDF_MALICIOUS firing suggest a malicious intent, possibly for SEO poisoning or to distribute further malware. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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/7202202201206206/Second-Innocence-Rediscovering-Joy-and-Wonder-A-Guide-to-Renewal-in-Work-Relati-Ons-and-Daily-Life-by-John-Izzo.pdf
    • http://xiixmcuin.linkpc.net/7202202201202202/The-Fabulous-Girl-s-Guide-to-Grace-Under-Pressure-Extreme-Etiquette-for-the-Stickiest-Trickiest-Most-Outrageous-Situations-of-Your-Life-by-Kim-Izzo.pdf
    • http://xiixmcuin.linkpc.net/4202207202205208/Sol-White-s-History-of-Colored-Baseball-with-Other-Documents-on-the-Early-Black-Game-1886-1936-by-Sol-White.pdf
    • http://xiixmcuin.linkpc.net/2201206207206207/White-Women-the-Sex-Black-Men-Love-Why-White-Women-Are-Those-Choice-for-Cheating-Black-Men-by-Raymoni-Love.pdf
    • http://xiixmcuin.linkpc.net/3200204204203202/Only-the-Ball-Was-White-A-History-of-Legendary-Black-Players-and-All-Black-Professional-Teams-by-Robert-W-Peterson.pdf
    • http://xiixmcuin.linkpc.net/4201205206207202/White-Nationalism-Black-Interests-Conservative-Public-Policy-and-the-Black-Community-by-Ronald-W-Walters.pdf
    • http://xiixmcuin.linkpc.net/1200208209208204208/Warwolves-of-the-Iron-Cross-Black-Wolf-White-Reich-Black-Nazis-Wehrwolf-Book-7-by-V-K-Clark.pdf
    • http://xiixmcuin.linkpc.net/4202200201201207/Black-Elk-Speaks-Being-the-Life-Story-of-a-Holy-Man-of-the-Oglala-Sioux-by-Black-Elk.pdf
    • http://xiixmcuin.linkpc.net/1200206205206201/The-Black-amp-White-You-Don-t-See-by-Des-Jernigan.pdf
    • http://xiixmcuin.linkpc.net/7204207200208203/Black-White-Other-by-Lise-Funderburg.pdf
    • http://xiixmcuin.linkpc.net/4205209206207208/Black-and-White-by-Gilbert-Sorrentino.pdf
    • http://xiixmcuin.linkpc.net/1208205202209/Black-and-White-Men-by-James-Spada.pdf
    • http://xiixmcuin.linkpc.net/3206200204203200/Black-amp-White-by-Dani-Shapiro.pdf
    • http://xiixmcuin.linkpc.net/3201208208209207/Black-and-White-by-Eric-Walters.pdf
    • http://xiixmcuin.linkpc.net/9206209207202/Black-and-White-by-Paul-Volponi.pdf
    • http://xiixmcuin.linkpc.net/1202204202200200/Ashen-Black-Dawn-1-by-P-J-White.pdf
    • http://xiixmcuin.linkpc.net/4209204202202203/White-Cat-Curse-Workers-1-by-Holly-Black.pdf
    • http://xiixmcuin.linkpc.net/2203200203200209/Tim-and-Tom-An-American-Comedy-in-Black-and-White-by-Tim-Reid.pdf
    • http://xiixmcuin.linkpc.net/4207204209206207/The-World-is-Black-and-White-by-Christopher-Knight.pdf
    • http://xiixmcuin.linkpc.net/4201202208202201/Pokemon-Black-and-White-Box-Set-by-Hidenori-Kusaka.pdf
    • http://xiixmcuin.linkpc.net/2201206207206207/White-Wom

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