Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e02c27b94ec94a1…

MALICIOUS

PDF

16.0 KB Created: 2019-04-30 02:37:43 +01:00 Authoring application: mPDF 5.7
MD5: a6ab9c9c2c8f0c2b0071c61bcb5ff35c SHA-1: 79187b14c76d44ade0beef5ef589faeac1533d17 SHA-256: 7e02c27b94ec94a13501514a8c8c9aa91e4e1d66b3c4054514d11a2f7c106eb9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/7099095096097096/Helena-The-Small-Town-Throwdown-by-Olga-Bogdan.pdf
    • http://loaminoo.linkpc.net/1091096095092094094/Small-Town-Vbs-Three-Vbs-Programs-with-Small-Town-Heart-and-Big-Time-Ideas-by-Gennifer-Anderson.pdf
    • http://loaminoo.linkpc.net/2092096092099/The-News-in-Small-Towns-Small-Town-Series-Book-1-by-Iza-Moreau.pdf
    • http://loaminoo.linkpc.net/1091097092093096099/Helena-The-Town-That-Gold-Built-the-First-150-Years-by-Ellen-Baumler.pdf
    • http://loaminoo.linkpc.net/5091093096095097/A-Small-Town-Called-Hibiscus-by-Gu-Hua.pdf
    • http://loaminoo.linkpc.net/4092096091092093/Famous-in-a-Small-Town-by-Emma-Mills.pdf
    • http://loaminoo.linkpc.net/9097097098096098/Small-Town-Treasure-by-Dora-Hiers.pdf
    • http://loaminoo.linkpc.net/2091092096099091/Small-Town-Ghosts-by-Shannon-Celebi.pdf
    • http://loaminoo.linkpc.net/8094099092093092/Small-Town-Punk-by-John-Sheppard.pdf
    • http://loaminoo.linkpc.net/8097098093094091/1979-A-Big-Year-in-a-Small-Town-by-Rhona-Cameron.pdf
    • http://loaminoo.linkpc.net/9096097099090094/Chasing-the-Beta-Small-Town-2-by-Jessica-Edwards.pdf
    • http://loaminoo.linkpc.net/1096098093096099/Small-Town-Tales-Volume-1-by-Daniel-Wilkens.pdf
    • http://loaminoo.linkpc.net/2099097092098091/SEAL-s-Bride-Small-Town-SEALs-1-by-Vivian-Wood.pdf
    • http://loaminoo.linkpc.net/2094097090094090/Crime-A-Small-Town-with-Big-Secrets-novella-by-Michael-Ace-Smith.pdf
    • http://loaminoo.linkpc.net/4099097098095096/The-Small-Town-Where-Everyone-Talked-to-Heaven-on-the-Telephone-A-Novel-by-Chris-McElwain.pdf
    • http://loaminoo.linkpc.net/3098098098093/The-Innocent-Man-Murder-and-Injustice-in-a-Small-Town-by-John-Grisham.pdf
    • http://loaminoo.linkpc.net/8097095094093097/Danger-in-a-Small-Town-Carolina-Justice-1-by-Ginny-Aiken.pdf
    • http://loaminoo.linkpc.net/2099090097098092/Small-Town-Heroes-Wearing-the-Cape-4-by-Marion-G-Harmon.pdf
    • http://loaminoo.linkpc.net/2094092097099093/Claws-and-Effect-Small-Town-Shifters-1-by-Lola-Kidd.pdf
    • http://loaminoo.linkpc.net/1092096093093094/Savannah-Dreams-A-Small-Town-Chronicle-by-Janet-Choplick.pdf
    • http://loaminoo.linkpc.net/90

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