Malicious PDF — malware analysis report

Static analysis result for SHA-256 380b8ec43f887474…

MALICIOUS

PDF

16.6 KB Created: 2019-04-30 05:02:26 +01:00 Authoring application: mPDF 5.7
MD5: fa3c7b0bf33b45db02907c2ae1b391ca SHA-1: 4de4565013928707b54bca59bc54a9bec70e1edb SHA-256: 380b8ec43f88747426df4276ac06daf1fbabf7c6dc177b492f81dc53051d1974
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier flagged this as malicious with high confidence, the specific intent beyond link farming is unclear as no malicious scripts were extracted. The document body itself is heavily obfuscated and contains many of the same URLs. The primary attack pattern appears to be a link farm, potentially for SEO manipulation or to distribute further malicious content.

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/1092098094096/Whitehorn-s-Woman-by-Barbara-McCauley.pdf
    • http://loaminoo.linkpc.net/1092094093095/Callan-s-Proposition-Secrets-4-by-Barbara-McCauley.pdf
    • http://loaminoo.linkpc.net/1092095099098/Courtship-in-Granite-Ridge-by-Barbara-McCauley.pdf
    • http://loaminoo.linkpc.net/1092094099093/Secret-Baby-Santos-Secrets-2-by-Barbara-McCauley.pdf
    • http://loaminoo.linkpc.net/3095093095098090/An-Accidental-Woman-by-Barbara-Delinsky.pdf
    • http://loaminoo.linkpc.net/1096095096091099/10-Powerful-Stress-Busters-For-the-Bam-VP-Woman-in-You-by-Barbara-Mitchell.pdf
    • http://loaminoo.linkpc.net/7099091097092/The-Crone-Woman-of-Age-Wisdom-and-Power-by-Barbara-G-Walker.pdf
    • http://loaminoo.linkpc.net/1098098099099096/What-a-Rich-Woman-Wants-Braddock-Brotherhood-4-by-Barbara-Meyers.pdf
    • http://loaminoo.linkpc.net/2092093096095092/Pen-on-Fire-A-Busy-Woman-s-Guide-to-Igniting-the-Writer-Within-by-Barbara-DeMarco-Barrett.pdf
    • http://loaminoo.linkpc.net/1098092094094095/Soul-of-a-Lion-One-Woman-s-Quest-to-Rescue-Africa-s-Wildlife-Refugees-by-Barbara-Bennett.pdf
    • http://loaminoo.linkpc.net/3090090091090091/The-Easy-Way-Out-by-Stephen-McCauley.pdf
    • http://loaminoo.linkpc.net/3090092090092097/Man-Of-The-House-by-Stephen-McCauley.pdf
    • http://loaminoo.linkpc.net/4099097091094094/Violet-and-the-Hidden-Treasure-Violet-2-by-Harriet-Whitehorn.pdf
    • http://loaminoo.linkpc.net/9093092099091092/Stalin-and-Stalinism-by-Martin-McCauley.pdf
    • http://loaminoo.linkpc.net/9093093092094/It-All-Started-with-a-Bicycle-by-Plum-McCauley.pdf
    • http://loaminoo.linkpc.net/1099097094094092/Appalachian-Mountain-Religion-by-Deborah-Vansau-McCauley.pdf
    • http://loaminoo.linkpc.net/6092097096092/M-t-t-Blue-and-the-Oil-Spill-A-Story-from-the-Rena-Disaster-Tauranga-Moana-Stories-2-by-Debbie-McCauley.pdf
    • http://loaminoo.linkpc.net/3099096094098099/Woman-Defamed-and-Woman-Defended-An-Anthology-of-Medieval-Texts-by-Alcuin-Blamires.pdf
    • http://loaminoo.linkpc.net/1098099099094094/It-s-in-the-House-Lessons-from-a-Widow-Woman-for-Everyone-Pearlable-Woman-1-by-Michelle-Word-Hollis.pdf
    • http://loaminoo.linkpc.net/2099098093099098/A-Woman-Trapped-in-a-Woman-s-Body-Tales-from-a-Life-of-Cringe-by-Lauren-Weedman.pdf
    • http://loaminoo.linkpc.net/3090092090092097/Man-Of-The-House-by-Stephen-Mc

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