Malicious PDF — malware analysis report

Static analysis result for SHA-256 8179973490102894…

MALICIOUS

PDF

18.9 KB Created: 2019-05-03 16:07:32 +01:00 Authoring application: mPDF 5.7
MD5: d1f89b64ca0f45729d6b87ece9de339e SHA-1: ba26b49ba542c40a669486560eeb1ddcb77e8236 SHA-256: 8179973490102894f16d0dbd68aef1dad44de46a6a4fc1e8803fe8efcd3a6f24
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a large number of embedded links, indicating a potential SEO spam or link farm attack. While no scripts were extracted, the presence of numerous external links suggests an attempt to direct users to potentially malicious or deceptive content. The primary attack pattern observed is the creation of a link farm within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

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://cefasfese.4pu.com/9730734736738739/Nur-Atlantik-by-Thomas-Langer.pdf
    • http://cefasfese.4pu.com/9730734737738731/La-Gomera-Kleine-Insel-im-gro-en-Atlantik-by-Martin-B-hler.pdf
    • http://cefasfese.4pu.com/9730734739730734/Flugbuch-Atlantik-Deutsche-Katapultfl-ge-1927-1939-by-J-rg-M-Hormann.pdf
    • http://cefasfese.4pu.com/9730734739730733/R-ckenwind-Atlantik-rund---ein-Segeltraum-in-zwei-Etappen-by-Peter-Menzel.pdf
    • http://cefasfese.4pu.com/9730735730730737/Reisef-hrer-Porto-Portugals-romantische-Stadt-an-Douro-und-Atlantik-by-Brigitte-Hilbrecht.pdf
    • http://cefasfese.4pu.com/2730738732734739/Crossing-California-by-Adam-Langer.pdf
    • http://cefasfese.4pu.com/2733736737737739/The-Thieves-of-Manhattan-by-Adam-Langer.pdf
    • http://cefasfese.4pu.com/2731739736736/Josephine-Herbst-by-Elinor-Langer.pdf
    • http://cefasfese.4pu.com/1730732733731731736/Mein-langer-Atem-by-Katrin-Zeddies.pdf
    • http://cefasfese.4pu.com/5739737734734732/The-Cambridge-Companion-to-Montaigne-by-Ullrich-Langer.pdf
    • http://cefasfese.4pu.com/1730736733733736738/Ein-langer-Brief-an-September-Nowak-by-Markus-Berges.pdf
    • http://cefasfese.4pu.com/1735735735733/The-Holocaust-and-the-Literary-Imagination-by-Lawrence-L-Langer.pdf
    • http://cefasfese.4pu.com/1735739730733/Mind-An-Essay-on-Human-Feeling-by-Susanne-K-Langer.pdf
    • http://cefasfese.4pu.com/9739734736736735/On-Becoming-an-Artist-Reinventing-Yourself-Through-Mindful-Creativity-by-Ellen-J-Langer.pdf
    • http://cefasfese.4pu.com/9739734736736736/Philosophy-in-a-New-Key-A-Study-in-the-Symbolism-of-Reason-Rite-and-Art-by-Susanne-K-Langer.pdf
    • http://cefasfese.4pu.com/9730735730730734/Trans-Atlantik-Trans-Portabel-Die-Amerikanisierungsthese-In-Der-Politischen-Kommunikation-by-Klaus-Kamps.pdf
    • http://cefasfese.4pu.com/5731736736733739/Miracle-The-True-Story-of-the-Wreck-of-the-Sea-Venture-by-Gail-Langer-Karwoski.pdf
    • http://cefasfese.4pu.com/1731733737738738737/Verlassene-Orte-in-Mei-en-Urban-Exploring-by-Claus-Dirk-Langer.pdf
    • http://cefasfese.4pu.com/9739734736731733/Counter-Clockwise-Mindful-Health-and-the-Power-of-Possibility-by-Ellen-J-Langer.pdf
    • http://cefasfese.4pu.com/1731737736733733736/Woerterbuch-Russisch-Deutsch-Neue-Woerter-in-Der-Russischen-Sprache-by-Tatjana-Langer.pdf