Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3d3473139d8c4d…

MALICIOUS

PDF

17.5 KB Created: 2019-04-30 04:35:18 +01:00 Authoring application: mPDF 5.7
MD5: 2054d72a697bc51e0cc628801340de55 SHA-1: 95fea171129dbd0abc29d8ada6e09ef14ebb714c SHA-256: 5d3d3473139d8c4d44614316020b4cd8cc8e4e7f84dc5a89a0c01ea8785e479c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links and the heuristic firing suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/1090097091090092091/Something-To-Hide-Thief-of-Hearts-Shadow-of-the-Sun-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090097091090096090/Tess-Gerritsen-Collection-The-Mephisto-Club-Call-After-Midnight-In-Their-Footsteps-Gravity-Whistleblower-Under-The-Knife-Stolen-Presumed-Guilty-Keeper-Of-The-Bride-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090097091091092095/A-Rizzoli-and-Isles-Series-Collection-5-Books-Set-By-Tess-Gerritsen-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090097090099090095/Interview-with-Tess-Gerritsen-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090097091091093096/LIST-SERIES-TESS-GERRITSEN-SERIES-READING-ORDER-TRAVISTOCK-FAMILY-BOOKS-RIZZOLI-amp-ISLES-BOOKS-RIZZOLI-amp-ISLES-SHORT-STORIES-STANDALONE-NOVELS-BY-TESS-GERRITSEN-by-List-Series.pdf
    • http://loaminoo.linkpc.net/1093092091096093/Die-Again-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/6099093093090099/Never-Say-Die-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/4090096099092/Gravity-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/3091097091096097/Whistleblower-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/4097096096096098/Bloodstream-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/4090096098095/Harvest-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090097091090093092/Under-the-Knife-Whistleblower-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/9098099093/Die-Again-Rizzoli-amp-Isles-11-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1099090095093091/The-Bone-Garden-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/4090094099095/The-Bone-Garden-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090095096095092094/T-dliche-Spritzen-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/3093093092095098/The-Bone-Garden-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/1090097091090095096/Love-s-Masquerade-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/2093097097091094/Call-After-Midnight-amp-Under-The-Knife-by-Tess-Gerritsen.pdf
    • http://loaminoo.linkpc.net/7093090092094/Double-Impact-Never-Say-Die-No-Way-Back-by-Tess-Gerritsen.pdf

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