Malicious PDF — malware analysis report

Static analysis result for SHA-256 441801c11639aba0…

MALICIOUS

PDF

14.0 KB Created: 2019-05-02 01:54:40 +01:00 Authoring application: mPDF 5.7
MD5: ce26420830b7a682f36f0fd265850b51 SHA-1: 4b035b3bce2cd3443cbfbc6aca238a0fa167e8b2 SHA-256: 441801c11639aba0d8e862ae90dbe3f3bc4a7afe0e25d5e22498cca62c75ca57
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files, identified as a link farm. This technique is often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged the PDF as malicious, supporting this assessment. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/2092094094092096/Enduring-Night-More-Heat-Than-the-Sun-7-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/2099097094092099/Conscious-Decisions-of-the-Heart-More-Heat-Than-The-Sun-2-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/2093094090091092/Death-s-Ink-Black-Shadow-More-Heat-Than-the-Sun-6-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/4094094096098099/Night-Of-The-Big-Heat-by-John-Lymington.pdf
    • http://loaminoo.linkpc.net/4097091092096091/John-Ball-s-In-the-Heat-of-the-Night-by-Matt-Pelfrey.pdf
    • http://loaminoo.linkpc.net/3091095098095098/Conscious-Decisions-of-the-Heart-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/2092093095091094/Aleksey-s-Kingdom-A-Royal-Affair-2-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/4092098090099099/In-The-Shadow-of-This-Red-Rock-Seasons-of-Murder-Book-3-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/1094097095093097/Night-Heat-by-Desiree-Holt.pdf
    • http://loaminoo.linkpc.net/2094093094099098/The-Heat-of-the-Night-by-Lorraine-Elzia.pdf
    • http://loaminoo.linkpc.net/1097092094091/Heat-Lightning-by-John-Lantigua.pdf
    • http://loaminoo.linkpc.net/1097093091099/In-the-Heat-of-the-Summer-by-John-Katzenbach.pdf
    • http://loaminoo.linkpc.net/2096091093096/Heat-of-Fusion-and-Other-Stories-by-John-M-Ford.pdf
    • http://loaminoo.linkpc.net/9098096091093095/Fear-the-Night-Night-5-by-John-Lutz.pdf
    • http://loaminoo.linkpc.net/9098096091093093/The-Night-Spider-Night-3-by-John-Lutz.pdf
    • http://loaminoo.linkpc.net/1094099094091099/A-Royal-Affair-A-Royal-Affair-1-by-John-Wiltshire.pdf
    • http://loaminoo.linkpc.net/3090093097091094/Naked-Heat-Nikki-Heat-2-by-Richard-Castle.pdf
    • http://loaminoo.linkpc.net/4091092097096095/Wanton-Heat-Feel-the-Heat-2-by-Nicola-Marsh.pdf
    • http://loaminoo.linkpc.net/8096097092097/Slow-Heat-Pacific-Heat-2-by-Jill-Shalvis.pdf
    • http://loaminoo.linkpc.net/4092095093099/Heat-Wave-Nikki-Heat-1-by-Richard-Castle.pdf
    • http://loaminoo.linkpc.net/1097093091099/In-the-

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