Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f62a819f7f50d7…

MALICIOUS

PDF

15.0 KB Created: 2019-04-30 02:45:36 +01:00 Authoring application: mPDF 5.7
MD5: 232969eb47f1816ca40416ccd8642e8c SHA-1: e020c2b6b56776732571f9281667f56bc215c5c0 SHA-256: e5f62a819f7f50d73d9a89fdef9035d67131ae569c5412c772c529cceffac023
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this sample 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 0.9200

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/5208202209207203/Stray-Leaves-from-Assam-A-Continuation-of-My-Journal-Twenty-Years-in-Assam-Further-Leaves-from-Assam-and-Autumn-Leaves-from-Assam-by-Jessie-Fremont-B-1857-Moore.pdf
    • http://xiixmcuin.linkpc.net/5208202209207204/Stray-Leaves-from-Assam-A-Continuation-of-My-Journal-Twenty-Years-in-Assam-Further-Leaves-from-Assam-and-Autumn-Leaves-from-Assam-by-Jessie-Fremont-Moore.pdf
    • http://xiixmcuin.linkpc.net/8206201209202209/Invalid-Format-An-Anthology-of-Triple-Canopy-Volume-1-by-Triple-Canopy.pdf
    • http://xiixmcuin.linkpc.net/3207206206206209/Canopy-Canopy-1-by-Crystal-Lee.pdf
    • http://xiixmcuin.linkpc.net/8206201209209200/Under-the-Canopy-by-Serg-Sorokin.pdf
    • http://xiixmcuin.linkpc.net/8206201209204202/Canopy-by-Dorothy-Lanasa.pdf
    • http://xiixmcuin.linkpc.net/8206201209203206/Under-the-Canopy-by-Dorothea-Straus.pdf
    • http://xiixmcuin.linkpc.net/8206202200202209/Air-The-Excellent-Canopy-by-Frank-J-Fahy.pdf
    • http://xiixmcuin.linkpc.net/1205200208204202/A-Canopy-of-Stars-by-Stephen-Taylor.pdf
    • http://xiixmcuin.linkpc.net/8206201209208201/Canopy-of-Hope-by-Wayne-Peterson.pdf
    • http://xiixmcuin.linkpc.net/3207204204209203/The-Canopy-by-Angela-Elwell-Hunt.pdf
    • http://xiixmcuin.linkpc.net/8206202200201206/Canopy-Of-Refuge-by-Frank-L-Johnson-III.pdf
    • http://xiixmcuin.linkpc.net/8206201209208203/The-Humid-Canopy-by-Rino-Breebaart.pdf
    • http://xiixmcuin.linkpc.net/3208207200206208/The-Canopy-Of-Time-by-Brian-W-Aldiss.pdf
    • http://xiixmcuin.linkpc.net/8206201209208209/The-Moon-Canopy-by-Fred-J-Feldman.pdf
    • http://xiixmcuin.linkpc.net/8206201209207202/The-Apostolic-Canopy-by-Joel-Garcia.pdf
    • http://xiixmcuin.linkpc.net/8206201209205204/Canopy-Of-Secrets-by-Robert-Renshaw.pdf
    • http://xiixmcuin.linkpc.net/8206201209207209/The-Moon-Canopy-by-Fred-Feldman.pdf
    • http://xiixmcuin.linkpc.net/8206201208209201/Canopy-of-Darkness-by-Jonathan-Kopf.pdf
    • http://xiixmcuin.linkpc.net/8206201208209203/Canopy-of-Silence-by-Margaret-Graham.pdf
    • http://xiixmcuin.linkpc.net/820

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