Malicious PDF — malware analysis report

Static analysis result for SHA-256 5443fb4e6229903d…

MALICIOUS

PDF

17.7 KB Created: 2019-05-02 18:32:19 +01:00 Authoring application: mPDF 5.7
MD5: a9ffef3e3d4fa7be45cc6c4bf623ee01 SHA-1: 5443a6218fc8910e65d5dfaa0d835dabe47e220c SHA-256: 5443fb4e6229903d0618daba018f1f60c3cb3bb3e51df2e5ba486f00b9f9acff
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 spam or to direct users to malicious content. The ML classifier strongly indicated maliciousness. While the specific URLs themselves are currently marked as benign, the sheer volume and structure of the link farm suggest a malicious intent to distribute or redirect. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/1090090095095095097/Truly-Madly-Pizza-One-Incredibly-Easy-Crust-Countless-Inspired-Combinations-amp-Other-Tidbits-to-Make-Pizza-a-Nightly-Affair-by-Suzanne-Lenzer.pdf
    • http://loaminoo.linkpc.net/4099090091092095/Killer-Crust-Pizza-Lovers-5-by-Chris-Cavender.pdf
    • http://loaminoo.linkpc.net/1090090095096099099/Thin-Crust-Killers-The-Pizza-Mysteries-7-by-Chris-Cavender.pdf
    • http://loaminoo.linkpc.net/1090090095095092092/Kitchen-Workshop-Pizza-Hands-on-Cooking-Lessons-for-Making-Amazing-Pizza-at-Home-by-Ruth-Gresser.pdf
    • http://loaminoo.linkpc.net/6097096098091/The-Book-of-Strange-and-Curious-Legal-Oddities-Pizza-Police-Illicit-Fishbowls-and-Other-Anomalies-of-Thelaw-That-Make-Us-Allu-Nsuspecting-Criminals-by-Nathan-Belofsky.pdf
    • http://loaminoo.linkpc.net/1090090095096090098/Pizza-by-Michele-Scicolone.pdf
    • http://loaminoo.linkpc.net/1090090095095096092/Pizza-Man-by-Darlene-Craviotto.pdf
    • http://loaminoo.linkpc.net/1090090095096099098/A-Pizza-My-Heart-by-Jolene-Haley.pdf
    • http://loaminoo.linkpc.net/1090090095095092093/The-Princess-and-the-Pizza-Man-Frostville-1-by-Cassie-Mae.pdf
    • http://loaminoo.linkpc.net/1090090095095096096/Pizza-Kittens-by-Charlotte-Voake.pdf
    • http://loaminoo.linkpc.net/2098098093091092/Sex-Lies-and-Pizza-by-Circe-DeWylde.pdf
    • http://loaminoo.linkpc.net/1090090095096090095/Pizza-for-Thanksgiving-by-Trina-Solet.pdf
    • http://loaminoo.linkpc.net/1090090095095094098/Zombies-Love-Pizza-by-Dan-Florence.pdf
    • http://loaminoo.linkpc.net/8094090097099092/Pasta-and-Pizza-by-Franco-La-Cecla.pdf
    • http://loaminoo.linkpc.net/4091090090099098/Pizza-Cats-by-Gail-Herman.pdf
    • http://loaminoo.linkpc.net/2098094096094097/Mages-Beer-amp-Pizza-by-Tom-Cook.pdf
    • http://loaminoo.linkpc.net/1090090095095091097/Pizza-at-Sally-s-by-Monica-Wellington.pdf
    • http://loaminoo.linkpc.net/7091098097094096/The-Basic-Art-of-Pizza-by-Maria-Liberati.pdf
    • http://loaminoo.linkpc.net/1090090095095096093/Pizza-amp-Promises-Tuscany-Series-2-by-Sophia-Bar-Lev.pdf
    • http://loaminoo.linkpc.net/1090090095096090093/The-Pizza-Monster-by-Marjorie-Weinman-Sharmat.pdf

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