Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7677a6c942a9a1e…

MALICIOUS

PDF

14.7 KB Created: 2019-05-02 01:19:44 +01:00 Authoring application: mPDF 5.7
MD5: 370e68b6db5e247396105673fdb2f301 SHA-1: 9d040cd48ddfb665dee5fa5c7e07902c88e93727 SHA-256: b7677a6c942a9a1e0016b3798b8cbcbebd5ecbc1cd3490a4493464e73e2f4fd0
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While many of these URLs resolve to benign content, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO poisoning or to distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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://xiixmcuin.linkpc.net/9209209201204205/Concrete-2-Canvas-More-Skateboarders-Art-by-Jo-Waterhouse.pdf
    • http://xiixmcuin.linkpc.net/9209208208206200/The-Women-of-Waterhouse-24-Cards-by-John-William-Waterhouse.pdf
    • http://xiixmcuin.linkpc.net/5205202208209207/Concrete-Designers-Manual-Tables-and-Diagrams-for-the-Design-of-Reinforced-Concrete-Structures-by-George-A-Hool.pdf
    • http://xiixmcuin.linkpc.net/9209208208205208/Waterhouse-on-Newspaper-Style-by-Keith-Waterhouse.pdf
    • http://xiixmcuin.linkpc.net/6203206209200206/Condensed-Silica-Fume-In-Concrete-by-Fip-Commission-On-Concrete.pdf
    • http://xiixmcuin.linkpc.net/7203203204207204/Dark-Canvas-Dark-Canvas-1-by-Jody-Summers.pdf
    • http://xiixmcuin.linkpc.net/1209205201204203/Blank-Canvas-by-Mere-Joyce.pdf
    • http://xiixmcuin.linkpc.net/3208207208203200/Canvas-by-Paul-Elard-Cooley.pdf
    • http://xiixmcuin.linkpc.net/2207203207205/The-Finite-Canvas-by-Brit-Mandelo.pdf
    • http://xiixmcuin.linkpc.net/1207201204208203/Blank-Canvas-by-Kirsten-McCurran.pdf
    • http://xiixmcuin.linkpc.net/3207209203209208/In-His-Hands-Blank-Canvas-3-by-Adriana-Anders.pdf
    • http://xiixmcuin.linkpc.net/3203201200209200/Blank-Canvas-Paint-2-by-Emma-Jaye.pdf
    • http://xiixmcuin.linkpc.net/1207209200205205/Canvas-Skies-Reliance-on-Citizens-2-by-S-L-Wallace.pdf
    • http://xiixmcuin.linkpc.net/2206203205207208/Sargent-s-Women-Four-Lives-Behind-the-Canvas-by-Donna-M-Lucey.pdf
    • http://xiixmcuin.linkpc.net/4204209207209/Rough-Canvas-Nature-of-Desire-6-by-Joey-W-Hill.pdf
    • http://xiixmcuin.linkpc.net/1205202205207206/Life-on-Canvas-An-Amish-Home-4-by-George-Michael-Loughmueller.pdf
    • http://xiixmcuin.linkpc.net/9209209200205208/Price-Waterhouse-by-Vault-com-Inc-.pdf
    • http://xiixmcuin.linkpc.net/9209208208206201/Soho-by-Keith-Waterhouse.pdf
    • http://xiixmcuin.linkpc.net/9209208209209204/Art-by-Tattooists-Beyond-Flash-by-Jo-Waterhouse.pdf
    • http://xiixmcuin.linkpc.net/9209209200206209/Our-Song-by-Keith-Waterhouse.pdf
    • http://xiixmcuin.linkpc.net/3207209203209208/In-His-Hands-Blank-Canvas-3-by-Adri

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