Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df65429d16c3fff…

MALICIOUS

PDF

22.7 KB Created: 2019-05-03 05:54:16 +01:00 Authoring application: mPDF 5.7
MD5: fbec2cc8ee18790018814fc702e96b60 SHA-1: 2dfbd8269e8cbb3064eac5e1bf4c74f94f1d4078 SHA-256: 4df65429d16c3ffffcde75db45db8dc3ca7628809603b87b3daeae6f52eee305
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier with high confidence. Static analysis revealed a large number of embedded external links, many of which point to book titles. The primary heuristic indicates a 'PDF_SEO_LINK_FARM', suggesting the document's purpose is to generate traffic or manipulate search engine results by linking to numerous external resources. While the specific intent beyond link farming is unclear due to the lack of executable scripts or clear malicious document body text, the sheer volume of links and the ML classification point to a malicious design.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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://loaminoo.li
    • http://loaminoo.linkpc.net/2093098090090095/Complaints-amp-Disorders-The-Sexual-Politics-of-Sickness-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/1098095094090098/Nickel-and-Dimed-On-Not-Getting-by-in-America-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/9094096092090096/Arbeit-poor-Unterwegs-in-der-Dienstleistungsgesellschaft-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/4094096092093092/Dancing-in-the-Streets-A-History-of-Collective-Joy-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/8098094099091095/A-Practical-Treatise-on-Disorders-of-the-Sexual-Function-in-the-Male-and-Female-1921-by-Max-H-hner.pdf
    • http://loaminoo.linkpc.net/2095091092097098/For-Her-Own-Good-Two-Centuries-of-the-Experts-Advice-to-Women-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/2097093093097093/Bright-Sided-How-Positive-Thinking-Is-Undermining-America-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/3097090095096094/The-Worst-Years-of-Our-Lives-Irreverent-Notes-from-a-Decade-of-Greed-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/7098095093/Natural-Causes-An-Epidemic-of-Wellness-the-Certainty-of-Dying-and-Killing-Ourselves-to-Live-Longer-by-Barbara-Ehrenreich.pdf
    • http://loaminoo.linkpc.net/4099094093092090/Eating-Disorders-New-Directions-in-Treatment-and-Recovery-by-Barbara-P-Kinoy.pdf
    • http://loaminoo.linkpc.net/9097095095099091/Sex-in-Crisis-The-New-Sexual-Revolution-and-the-Future-of-American-Politics-by-Dagmar-Herzog.pdf
    • http://loaminoo.linkpc.net/1091093097092094094/When-States-Come-Out-Europe-s-Sexual-Minorities-and-the-Politics-of-Visibility-by-Phillip-M-Ayoub.pdf
    • http://loaminoo.linkpc.net/5092092092096094/Disorderly-Women-Sexual-Politics-and-Evangelicalism-in-Revolutionary-New-England-by-Susan-Juster.pdf
    • http://loaminoo.linkpc.net/2097094094096098/The-Sexual-Politics-of-Meat-A-Feminist-Vegetarian-Critical-Theory-by-Carol-J-Adams.pdf
    • http://loaminoo.linkpc.net/1098095099094095/Black-Sexual-Politics-African-Americans-Gender-and-the-New-Racism-by-Patricia-Hill-Collins.pdf
    • http://loaminoo.linkpc.net/4091095096090096/The-Politics-of-Passion-Women-s-Sexual-Culture-in-the-Afro--Surinamese-Diaspora-by-Gloria-Wekker.pdf
    • http://loaminoo.linkpc.net/4094098094093093/The-Politics-of-Passion-Women-s-Sexual-Culture-in-the-Afro-Surinamese-Diaspora-by-Gloria-Wekker.pdf
    • http://loaminoo.linkpc.net/2097092091091090/The-Invisible-Bond-How-to-Break-Free-from-Your-Sexual-Past-by-Barbara-Wilson.pdf
    • http://loaminoo.linkpc.net/1099094090092093/The-Book-of-Wishes-and-Complaints-by-Zina-Rohan.pdf
    • http://loaminoo.linkpc.net/7092096093093092/The-Sexual-Teachings-of-the-Jade-Dragon-Taoist-Methods-for-Male-Sexual-Revitalization-by-Hsi-Lai.pdf

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