Malicious PDF — malware analysis report

Static analysis result for SHA-256 c209d8782535d3e9…

MALICIOUS

PDF

18.9 KB Created: 2019-04-30 04:48:25 +01:00 Authoring application: mPDF 5.7
MD5: 28fce504459578eb5b1e578ba8bbd1e6 SHA-1: 53fe0fe26780b96a468dab8286e4e508bc0f380f SHA-256: c209d8782535d3e980d90fa7afb8bc3376f8f64bf2a29a615fd8b2897a51646b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, identified as a PDF SEO link farm, pointing to various book titles hosted on 'loaminoo.linkpc.net'. While the specific intent of these links is unclear without further analysis of the linked content, the sheer volume and the heuristic firing suggest a malicious attempt to manipulate search results or distribute potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1096092099095090/Kiss-of-Steel-London-Steampunk-1-by-Bec-McMaster.pdf
    • http://loaminoo.linkpc.net/1092092091093091/Heart-of-Iron-London-Steampunk-2-by-Bec-McMaster.pdf
    • http://loaminoo.linkpc.net/1091094094099/Forged-by-Desire-London-Steampunk-4-by-Bec-McMaster.pdf
    • http://loaminoo.linkpc.net/4090093096093093/Of-Silk-and-Steam-London-Steampunk-5-by-Bec-McMaster.pdf
    • http://loaminoo.linkpc.net/2090094093094096/The-Mech-Who-Loved-Me-London-Steampunk-The-Blue-Blood-Conspiracy-2-by-Bec-McMaster.pdf
    • http://loaminoo.linkpc.net/2099093099094092/To-Catch-A-Rogue-London-Steampunk-The-Blue-Blood-Conspiracy-4-by-Bec-McMaster.pdf
    • http://loaminoo.linkpc.net/4094090093095094/Kiss-of-the-Spindle-Steampunk-Proper-Romance-2-by-Nancy-Campbell-Allen.pdf
    • http://loaminoo.linkpc.net/2098096095/The-Steel-Kiss-Lincoln-Rhyme-12-by-Jeffery-Deaver.pdf
    • http://loaminoo.linkpc.net/4091097090094095/Key-the-Steampunk-Vampire-Girl-and-the-Dungeon-of-Despair-Steampunk-Sorcery-1-by-Becket.pdf
    • http://loaminoo.linkpc.net/3092099091093098/Steampunk-Prime-A-Vintage-Steampunk-Reader-by-Mike-Ashley.pdf
    • http://loaminoo.linkpc.net/3091093094099095/Froggy-s-First-Kiss-by-Jonathan-London.pdf
    • http://loaminoo.linkpc.net/7095095091095096/Steampunk-Style-by-Steampunk-Oriental-Laboratory.pdf
    • http://loaminoo.linkpc.net/2097090098099097/Softer-Than-Steel-Love-amp-Steel-2-by-Jessica-Topper.pdf
    • http://loaminoo.linkpc.net/3095099098092098/Steel-Justice-Steel-Infidels-3-by-Dez-Burke.pdf
    • http://loaminoo.linkpc.net/5095093091094092/Erection-and-Inspection-of-Iron-and-Steel-Constructions-Written-for-the-Use-of-Architects-Engineers-and-Builders-and-for-Civil-Service-Candidates-for-the-Position-of-Inspector-of-Iron-and-Steel-by-L-M-Bernfeld.pdf
    • http://loaminoo.linkpc.net/4093098098093093/The-Stainless-Steel-Rat-Joins-the-Circus-Stainless-Steel-Rat-10-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/2090096093091091/Kiss-Across-Kingdoms-Kiss-Across-Time-5-by-Tracy-Cooper-Posey.pdf
    • http://loaminoo.linkpc.net/9095097097091097/A-Kiss-Before-Lying-Last-Kiss-Series-Book-1-by-Bethany-Hensel.pdf
    • http://loaminoo.linkpc.net/2090096093091096/Kiss-Across-Swords-Kiss-Across-Time-2-by-Tracy-Cooper-Posey.pdf
    • http://loaminoo.linkpc.net/1091095092095/The-Luckiest-Lady-in-London-The-London-Trilogy-1-by-Sherry-Thomas.pdf