Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d507fbc4da23f5a…

MALICIOUS

PDF

16.0 KB Created: 2019-05-02 05:49:48 +01:00 Authoring application: mPDF 5.7
MD5: cb42a059f04426cdc07b5bd2ef374380 SHA-1: ad45fdac2f3474d564fb2c6c7bfeea354b0e2021 SHA-256: 5d507fbc4da23f5aec1440d5fa73fdd47f4305052283cbe59577fc9e8d6f4e19
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that point to other PDF files, forming a link farm. This behavior is indicative of SEO manipulation or a method to distribute further malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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://xiixmcuin.linkpc.net/2205206202206203/At-Attention-Out-of-Uniform-2-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/4201209205209206/On-Point-Out-of-Uniform-3-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/2207202208204208/Off-Base-Out-of-Uniform-1-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/4209205203208204/Resilient-Heart-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/4209202209/Off-Base-Out-of-Uniform-1-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/3204200207200204/Beta-Test-gaymers-2-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/3204200206208205/Danced-Close-Portland-Heat-6-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/4207202207207209/Trust-with-a-Chaser-Rainbow-Cove-1-by-Annabeth-Albert.pdf
    • http://xiixmcuin.linkpc.net/1201209204208201208/The-Pout-Pout-Fish-Wipe-Clean-Workbook-ABC-1-20-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/1201209204208202200/Trick-or-Treat-Pout-Pout-Fish-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/1201209204207205202/The-Pout-Pout-Fish-book-and-CD-storytime-set-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/1201209204206208201/The-Not-Very-Merry-Pout-Pout-Fish-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/1201209204206208204/The-Pout-Pout-Fish-Far-Far-from-Home-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/1208205200206207/The-Pout-Pout-Fish-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/1201209204207204205/The-Pout-Pout-Fish-Tank-A-Book-and-Fish-Set-by-Deborah-Diesen.pdf
    • http://xiixmcuin.linkpc.net/4205207203208202/Annabeth-s-War-by-Jessica-Greyson.pdf
    • http://xiixmcuin.linkpc.net/1200204204202201207/Yell-and-Shout-Cry-and-Pout-A-Kid-s-Guide-to-Feelings-by-Peggy-Kruger-Tietz.pdf
    • http://xiixmcuin.linkpc.net/3201207201201208/Liquid-Longing---An-Erotic-Anthology-of-the-Sacred-and-Profane-by-Annabeth-Leong.pdf
    • http://xiixmcuin.linkpc.net/1200208203200206209/Albert-of-Aachen-s-History-of-the-Journey-to-Jerusalem-Volume-1-Books-1-6-the-First-Crusade-1095-1099-by-Albert-of-Aachen.pdf
    • http://xiixmcuin.linkpc.net/8200208206209208/Laboratory-Experiments-in-Metallurgy-by-Albert-Sauveur-and-H-M-Boylston-by-Albert-Sauveur.pdf

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