Malicious PDF — malware analysis report

Static analysis result for SHA-256 616a5780eb6774c3…

MALICIOUS

PDF

19.2 KB Created: 2020-03-20 12:18:10 +00:00 Authoring application: mPDF 5.7
MD5: f6a7df5631e98bce79ffce17750a273d SHA-1: 555b3e160d9938a0e9e646d63016a4b662380f9d SHA-256: 616a5780eb6774c364fffcecbc3f8077dee6520c0450df29cae8fd5cab79526e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to a single domain, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The embedded URLs likely serve as a lure to download further malicious content or to engage in SEO poisoning tactics. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://ieuicufioao.myhome.cx/5550556557556/The-Coldfire-Trilogy-Black-Sun-Rising-When-True-Night-Falls-Crown-of-Shadows-by-C-S-Friedman.pdf
    • http://ieuicufioao.myhome.cx/1557559550550554/Dominion-The-Coldfire-Trilogy-0-5-by-C-S-Friedman.pdf
    • http://ieuicufioao.myhome.cx/2551558557553553/Secrets-in-the-Shadows-The-Guardians-of-the-Night-2-by-Jenna-Black.pdf
    • http://ieuicufioao.myhome.cx/3550558554559551/Night-Falls-Night-Falls-1-by-Joseph-Eastwood.pdf
    • http://ieuicufioao.myhome.cx/1551557553558556/Afternoon-of-the-Rising-Sun-The-Battle-of-Leyte-Gulf-by-Kenneth-I-Friedman.pdf
    • http://ieuicufioao.myhome.cx/3551559550552553/Darkness-Rising-Complete-Trilogy-Collection-The-Gathering-The-Calling-The-Rising-by-Kelley-Armstrong.pdf
    • http://ieuicufioao.myhome.cx/6556552557555554/Red-Rising-Red-Rising-Trilogy-1-by-Pierce-Brown.pdf
    • http://ieuicufioao.myhome.cx/2558551551551559/Red-Rising-Red-Rising-Trilogy-1-by-Pierce-Brown.pdf
    • http://ieuicufioao.myhome.cx/2559558556559550/Locke-amp-Key-Vol-3-Crown-of-Shadows-by-Joe-Hill.pdf
    • http://ieuicufioao.myhome.cx/5554553558559558/The-Adventures-of-Rouletabille---The-First-Trilogy-The-Mystery-of-the-Yellow-Room-The-Perfume-of-the-Lady-in-Black-The-Secret-of-the-Night-The-Phantom-of-the-Opera-by-Gaston-Leroux.pdf
    • http://ieuicufioao.myhome.cx/2551559551557552/Midnight-Falls-The-Order-of-Shadows-2-by-Kit-Hallows.pdf
    • http://ieuicufioao.myhome.cx/3556557553550557/Feast-of-Souls-The-Magister-Trilogy-1-by-C-S-Friedman.pdf
    • http://ieuicufioao.myhome.cx/4551550557558/Feast-of-Souls-The-Magister-Trilogy-1-by-C-S-Friedman.pdf
    • http://ieuicufioao.myhome.cx/1553553552550557/Feast-of-Souls-The-Magister-Trilogy-1-by-C-S-Friedman.pdf
    • http://ieuicufioao.myhome.cx/5558554553551556/The-Complete-Conclave-of-Shadows-Trilogy-Talon-of-the-Silver-Hawk-King-of-Foxes-Exile-s-Return-Conclave-of-Shadows-1-3-by-Raymond-E-Feist.pdf
    • http://ieuicufioao.myhome.cx/3550553554556554/Black-Swan-Rising-Black-Swan-Rising-1-by-Lee-Carroll.pdf
    • http://ieuicufioao.myhome.cx/1558551558559559/Black-Swan-Rising-Black-Swan-Rising-1-by-Lee-Carroll.pdf
    • http://ieuicufioao.myhome.cx/3556557556551556/Tannhauser-Rising-Sun-Falling-Shadows-by-Robert-T-Jeschonek.pdf
    • http://ieuicufioao.myhome.cx/1555557556551555/True-North-True-Born-Trilogy-2-by-L-E-Sterling.pdf
    • http://ieuicufioao.myhome.cx/2550555555558/True-Vision-True-Trilogy-1-by-Joyce-Lamb.pdf

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