Malicious PDF — malware analysis report

Static analysis result for SHA-256 c35706a94af982d1…

MALICIOUS

PDF

17.2 KB Created: 2019-04-30 04:06:43 +01:00 Authoring application: mPDF 5.7
MD5: b0d083231cc6b33054bafe9190a5255e SHA-1: a45a7505451d43882af08a88cc7218644a7a38b4 SHA-256: c35706a94af982d19a9a7f105289a1d934e427fa7b081950f4ca867467eaa333
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 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 classified as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' indicate a malicious intent, likely for SEO manipulation or to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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/2098090098090098/A-Rare-Benedictine-Chronicles-of-Brother-Cadfael-prequel-stories-0-1-0-3-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/4090097099093095/A-Rare-Benedictine-Chronicles-Of-Brother-Cadfael-21-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/2093093091095091/The-Confession-of-Brother-Haluin-Chronicles-of-Brother-Cadfael-15-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/3091096095093/The-Potter-s-Field-Chronicles-of-Brother-Cadfael-17-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/1093098094093098/Monk-s-Hood-Chronicles-of-Brother-Cadfael-3-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/1094099091099094/Monk-s-Hood-Chronicles-of-Brother-Cadfael-3-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/3092090091099097/The-Holy-Thief-Chronicles-of-Brother-Cadfael-19-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/3092090095096091/The-Hermit-of-Eyton-Forest-Chronicles-of-Brother-Cadfael-14-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/7093094090093097/Resgate-para-um-Homem-morto-ou-Os-Cativos-Chronicles-of-Brother-Cadfael-9-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/3095096097099093/One-Corpse-Too-Many-Cadfael-2-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/3096098091092099/The-Devil-s-Novice-Cadfael-8-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/2099097099093095/Book-Finds-How-to-Find-Buy-and-Sell-Used-and-Rare-Books-by-Ian-C-Ellis.pdf
    • http://loaminoo.linkpc.net/1096098090093095/The-Piper-on-the-Mountain-Felse-5-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/3097092094096091/The-Grass-Widow-s-Tale-Felse-7-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/4098095096093095/Black-Is-the-Colour-of-My-True-Love-s-Heart-Felse-6-by-Ellis-Peters.pdf
    • http://loaminoo.linkpc.net/7099097093099092/In-the-Eyes-of-Madness-Declan-Peters-Chronicles-1-by-Michael-Pang.pdf
    • http://loaminoo.linkpc.net/3090097096095091/Wolf-Brother-Chronicles-of-Ancient-Darkness-1-by-Michelle-Paver.pdf
    • http://loaminoo.linkpc.net/4091095099093091/The-Dead-Man-Chronicles-Fear-by-Ellis-E-Fowler.pdf
    • http://loaminoo.linkpc.net/3096093096097091/Angels-Winged-Whispers-True-Stories-from-Angel-Experts-around-the-World-by-Flavia-Kate-Peters.pdf
    • http://loaminoo.linkpc.net/1090099093090098098/Romulus-Buckle-amp-the-Luminiferous-Aether-Chronicles-of-the-Pneumatic-Zeppelin-3-by-Richard-Ellis-Preston-Jr-.pdf

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