Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6dcf978f57f3491…

MALICIOUS

PDF

13.1 KB Created: 2019-04-30 05:30:00 +01:00 Authoring application: mPDF 5.7
MD5: e627e91c88118ffc5d1135a6700e4095 SHA-1: a4ca18937a4c04a743626ccf750d43229e5a18b3 SHA-256: f6dcf978f57f349193cfee7d69b98503ac74770dbbac102158623ed11dd7d17d
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious. While the specific intent of the links is unclear, the sheer volume and the heuristic firing suggest a malicious purpose, likely to distribute further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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.lin
    • http://loaminoo.linkpc.net/7091090097091094/-Seventeen-Syllables-Hisaye-Yamamoto-by-Hisaye-Yamamoto.pdf
    • http://loaminoo.linkpc.net/1091091098091098094/On-the-Line-Off-the-Ice-2-by-Stina-Lindenblatt.pdf
    • http://loaminoo.linkpc.net/1091091098091098092/Monroe-by-Stina-Rubio.pdf
    • http://loaminoo.linkpc.net/1091091098092095098/Breaking-Up-He-s-Just-Not-That-Into-God-by-Stina-Wilson.pdf
    • http://loaminoo.linkpc.net/2099090093096097/Heat-It-Up-by-Stina-Lindenblatt.pdf
    • http://loaminoo.linkpc.net/1091091098092095095/Kaya-s-Curse-by-Stina-Rubio.pdf
    • http://loaminoo.linkpc.net/1091091098090096097/Decidedly-With-Love-By-The-Bay-3-by-Stina-Lindenblatt.pdf
    • http://loaminoo.linkpc.net/1091091098090097092/Once-Upon-a-Cowboy-Copper-Creek-2-by-Stina-Lindenblatt.pdf
    • http://loaminoo.linkpc.net/4092094094092090/Blackthorne-The-Malorum-Gates-2-by-Stina-Leicht.pdf
    • http://loaminoo.linkpc.net/1091091098091098093/Efronia-An-Armenian-Love-Story-by-Stina-Katchadourian.pdf
    • http://loaminoo.linkpc.net/1091091098091099094/Stina-and-the-Decision-Mail-Order-Bride-3-by-D-D-Boone.pdf
    • http://loaminoo.linkpc.net/2098092097096097/Cold-Iron-The-Malorum-Gates-1-by-Stina-Leicht.pdf
    • http://loaminoo.linkpc.net/2098099095099097/And-Blue-Skies-From-Pain-The-Fey-and-the-Fallen-2-by-Stina-Leicht.pdf
    • http://loaminoo.linkpc.net/9097097092092091/Die-Ausgrabungen-in-Pal-stina-Und-Das-Alte-Testament-by-Hugo-Gremann.pdf
    • http://loaminoo.linkpc.net/1096094093091092/Betty-San-by-Michiko-Yamamoto.pdf
    • http://loaminoo.linkpc.net/2096093097097090/Kaua-i-by-Luci-Yamamoto.pdf
    • http://loaminoo.linkpc.net/6097097094097097/Hagakure-by-Yamamoto-Tsunetomo.pdf
    • http://loaminoo.linkpc.net/7091090098098097/Blooming-Darling-Vol-2-by-Kotetsuko-Yamamoto.pdf
    • http://loaminoo.linkpc.net/7091090097090098/Yamamoto-by-John-Deane-Potter.pdf
    • http://loaminoo.linkpc.net/3091091099092090/Ballerina-Birdies-by-Marina-Yamamoto.pdf

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