Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ffad00c3dec895…

MALICIOUS

PDF

18.6 KB Created: 2019-04-30 01:55:54 +01:00 Authoring application: mPDF 5.7
MD5: e632a7f425a44a8ed9ec6ab248e3dc70 SHA-1: 2619f1e8183e6e10e3cb96f724799b43d8c55925 SHA-256: 83ffad00c3dec89524c959707994fdfd1e8e80b8ccb609afac253b70a7d13397
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external URLs, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to direct users to potentially harmful content or manipulate search engine results. The primary IOCs are the external URLs embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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.linkpc.net/9095099099094096/Master-the-Art-of-Brushing-and-Flossing-with-the-Wisdom-Tooth-Academy-Workbook-amp-Journal-Taught-By-Drumroll-Please-Tallulah-the-Tooth-Fairy-by-Tina-Renee-Cambio.pdf
    • http://loaminoo.linkpc.net/1090095099092/The-Quiet-Book-by-Deborah-Underwood.pdf
    • http://loaminoo.linkpc.net/4091096090098096/The-Tooth-Fairy-by-Shirley-Barber.pdf
    • http://loaminoo.linkpc.net/4098096096090098/The-Story-of-the-Tooth-Fairy-by-Tom-Paxton.pdf
    • http://loaminoo.linkpc.net/9095097095092/The-Tooth-Fairy-by-Graham-Joyce.pdf
    • http://loaminoo.linkpc.net/1090098094092092091/Then-the-Tooth-Fairy-Won-t-Come-by-Bonnie-Ferrante.pdf
    • http://loaminoo.linkpc.net/4091093093097094/The-Tooth-Fairy-by-Graham-Joyce.pdf
    • http://loaminoo.linkpc.net/5097094095091/What-the-Dickens-The-Story-of-a-Rogue-Tooth-Fairy-by-Gregory-Maguire.pdf
    • http://loaminoo.linkpc.net/1091090092094098/What-the-Dickens-The-Story-of-a-Rogue-Tooth-Fairy-by-Gregory-Maguire.pdf
    • http://loaminoo.linkpc.net/2091092097090095/What-the-Dickens-The-Story-of-a-Rogue-Tooth-Fairy-by-Gregory-Maguire.pdf
    • http://loaminoo.linkpc.net/7093093092093/Horrid-Henry-Tricks-the-Tooth-Fairy-by-Francesca-Simon.pdf
    • http://loaminoo.linkpc.net/2096099091093091/Happy-Valentine-s-Slay-Children-of-Hamlin-Tooth-amp-Nail-amp-Fairy-Tale-Ember-in-the-Wind-Jar-of-Hearts-Welcome-to-Sorrow-The-Grimm-Diaries-Prequels-11--14-by-Cameron-Jace.pdf
    • http://loaminoo.linkpc.net/4090094093094093/The-Guardians-Nicholas-St-North-and-the-Battle-of-the-Nightmare-King-E-Aster-Bunnymund-and-the-Warrior-Eggs-at-the-Earth-s-Core-Toothiana-Queen-of-the-Tooth-Fairy-Armies-by-William-Joyce.pdf
    • http://loaminoo.linkpc.net/1098098093093093/Tooth-by-Tooth-Comparing-Fangs-Tusks-and-Chompers-by-Sara-Levine.pdf
    • http://loaminoo.linkpc.net/3092098096096093/And-Nothing-but-the-Tooth-Tooth-Is-Stranger-Than-Fiction-3-by-Carroll-James.pdf
    • http://loaminoo.linkpc.net/3092098093099092/Tooth-for-a-Tooth-DCI-Gilchrist-3-by-Frank-Muir.pdf
    • http://loaminoo.linkpc.net/2095093098097093/Teeny-Tiny-Tina-the-Teeny-Tiny-Tooth-Fairy-by-Rosemary-R-Evans.pdf
    • http://loaminoo.linkpc.net/4092092090096094/Tooth-for-Tooth-by-Kimberley-Payne.pdf
    • http://loaminoo.linkpc.net/5093092098097096/Crocodile-s-Sore-Tooth-Crocodile-s-Sore-Tooth-by-Fundisile-Gwazube.pdf
    • http://loaminoo.linkpc.net/9092092090099092/Die-Feuerprobe-Roman-by-Ed-Underwood.pdf
    • http://loaminoo.linkpc.net/5097094095091/What-the-Dickens-The-Story-of-a-Rogue-Tooth-Fairy-by-Gregor