Malicious PDF — malware analysis report

Static analysis result for SHA-256 62567d3bc7837ff8…

MALICIOUS

PDF

15.2 KB Created: 2019-05-02 02:17:53 +01:00 Authoring application: mPDF 5.7
MD5: 020cb46f5dd30097cf03372b9dc35f26 SHA-1: e3b63b9e979677a3cb45eb571fec1340375a3e7d SHA-256: 62567d3bc7837ff865333a904b44c8b37c56c1274539c79e0514229df37c200b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm or a method to distribute potentially malicious content. While the ML classifier flagged it as malicious, the specific intent beyond link distribution is unclear due to the lack of executable scripts. The URLs themselves are currently marked as benign, but their sheer volume and the heuristic firing indicate a suspicious pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/3202207203203209/Forever-Black-Forever-1-by-Sandi-Lynn.pdf
    • http://xiixmcuin.linkpc.net/1203203205/A-Forever-Family-Forever-5-by-Sandi-Lynn.pdf
    • http://xiixmcuin.linkpc.net/2200207209208/Kiss-Me-Forever-Love-Me-Forever-Forever-Vampires-1-2-by-Rosemary-Laurey.pdf
    • http://xiixmcuin.linkpc.net/7208202205205208/The-Forever-War-Series-The-Forever-War-A-Separate-War-and-Forever-Free-by-Joe-Haldeman.pdf
    • http://xiixmcuin.linkpc.net/1201200209201204/A-Faerie-Fated-Forever-Forever-1-by-Mary-Anne-Graham.pdf
    • http://xiixmcuin.linkpc.net/3208201207202204/A-Faerie-Fated-Forever-Forever-1-by-Mary-Anne-Graham.pdf
    • http://xiixmcuin.linkpc.net/2207203208209209/Forever-and-Forever-The-Courtship-of-Henry-Longfellow-and-Fanny-Appleton-Historical-Proper-Romance-1-by-Josi-S-Kilpack.pdf
    • http://xiixmcuin.linkpc.net/2209204208209206/Forever-Hidden-Forever-Bluegrass-2-by-Kathleen-Brooks.pdf
    • http://xiixmcuin.linkpc.net/5206206208204203/Running-From-Forever-The-Forever-Series-5-by-Ashley-Wilcox.pdf
    • http://xiixmcuin.linkpc.net/2206205206203201/Forever-Hidden-Forever-Bluegrass-2-by-Kathleen-Brooks.pdf
    • http://xiixmcuin.linkpc.net/3209200206200208/Forever-Together-The-Forever-Love-Series-2-by-Jade-Whitfield.pdf
    • http://xiixmcuin.linkpc.net/4209208205200209/Forever-and-Always-Caitlin-Forever-Trilogy-2-by-Francine-Pascal.pdf
    • http://xiixmcuin.linkpc.net/1201204207201205204/Protecting-His-Forever-Forever-Series-1-by-LeAnn-Ashers.pdf
    • http://xiixmcuin.linkpc.net/3205203207203200/Forever-Yours-Christian-s-Coven-8-by-Lynn-Hagen.pdf
    • http://xiixmcuin.linkpc.net/3207208205205208/Mine-Forever-Brac-Pack-Next-Gen-5-by-Lynn-Hagen.pdf
    • http://xiixmcuin.linkpc.net/2200200208209200/Becoming-Forever-Waking-Forever-3-by-Heather-McVea.pdf
    • http://xiixmcuin.linkpc.net/5206206207204203/Promising-Forever-Forever-3-by-Ashley-Wilcox.pdf
    • http://xiixmcuin.linkpc.net/1203203201202205/Forever-Love-Now-amp-Forever-3-by-Melissa-Johns.pdf
    • http://xiixmcuin.linkpc.net/3207203206208201/My-Savior-Forever-Forever-1-by-Vicki-Green.pdf
    • http://xiixmcuin.linkpc.net/1200205207208203205/Forever-Black-Nightwalkers-2-by-H-N-Sieverding.pdf

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