Malicious PDF — malware analysis report

Static analysis result for SHA-256 e40c6bf6b610cdd9…

MALICIOUS

PDF

17.1 KB Created: 2019-05-03 07:17:09 +01:00 Authoring application: mPDF 5.7
MD5: c705d963b7801834712b0b8c2df92496 SHA-1: 180aefebe7f3303d5b51617172487fb2dc46b324 SHA-256: e40c6bf6b610cdd90da7c5ecbb5741d43bbd352b05e23762390c08d4e3183bee
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While the specific intent of these links is not fully clear from the provided data, the sheer volume and the nature of the heuristic suggest a malicious distribution or SEO poisoning attempt. 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/3090093099093095/The-Whole-Stupid-Way-We-Are-by-N-Griffin.pdf
    • http://loaminoo.linkpc.net/5098098091098/I-m-With-Stupid-Stupid-Fast-3-by-Geoff-Herbach.pdf
    • http://loaminoo.linkpc.net/4094093094098/Official-Book-Club-Selection-A-Memoir-According-to-Kathy-Griffin-by-Kathy-Griffin.pdf
    • http://loaminoo.linkpc.net/3091098091095096/Griffin-amp-Sabine-An-Extraordinary-Correspondence-Griffin-amp-Sabine-1-by-Nick-Bantock.pdf
    • http://loaminoo.linkpc.net/1091092092097092/The-Unexpected-Enlightenment-of-Rachel-Griffin-Rachel-Griffin-1-by-L-Jagi-Lamplighter.pdf
    • http://loaminoo.linkpc.net/1091090091096096/The-Unexpected-Enlightenment-of-Rachel-Griffin-Rachel-Griffin-1-by-L-Jagi-Lamplighter.pdf
    • http://loaminoo.linkpc.net/5093090093099094/Decorating-With-Decoupage-Handmade-Gifts-And-Accessories-Using-Anna-Griffin-s-New-Decoupe-Papers-A-Step-By-Step-Guide-To-Creating-Over-42-Easy-To-Make-Projects-by-Anna-Griffin.pdf
    • http://loaminoo.linkpc.net/1095093092097098/Remnant-A-Caldwell-amp-Feximal-Whyborne-amp-Griffin-Mystery-The-Secret-Casebook-of-Simon-Feximal-3-Whyborne-amp-Griffin-3-5-by-K-J-Charles.pdf
    • http://loaminoo.linkpc.net/2098099098091094/Griffin-s-Daughter-Griffin-s-Daughter-Trilogy-1-by-Leslie-Ann-Moore.pdf
    • http://loaminoo.linkpc.net/2092095099096096/Just-Stupid-by-Andy-Griffiths.pdf
    • http://loaminoo.linkpc.net/1091094093096099095/I-m-with-Stupid-by-Elaine-Szewczyk.pdf
    • http://loaminoo.linkpc.net/3094095097094090/Stupid-Cupid-by-closet_anarchist.pdf
    • http://loaminoo.linkpc.net/9093096099096099/Well-Duh-Our-Stupid-World-and-Welcome-to-It-by-Bob-Fenster.pdf
    • http://loaminoo.linkpc.net/1091099094098090/Stupid-By-Choice-by-Leighton-Summers.pdf
    • http://loaminoo.linkpc.net/4094094094091097/Don-t-Call-Me-Stupid-by-Steven-Weissman.pdf
    • http://loaminoo.linkpc.net/7097099099091098/You-re-Not-Stupid-You-re-Ignorant-by-Lance-Hodge.pdf
    • http://loaminoo.linkpc.net/4091092095096095/Just-Stop-Having-Problems-Stupid-by-Dr-Matt.pdf
    • http://loaminoo.linkpc.net/2099096095096096/The-Wonderful-Stupid-Man-by-Allen-Frost.pdf
    • http://loaminoo.linkpc.net/8092091095097097/A-Bad-and-Stupid-Girl-by-Jean-McGarry.pdf
    • http://loaminoo.linkpc.net/2093096094091095/Brief-Chronicle-of-Another-Stupid-Heartbreak-by-Adi-Alsaid.pdf
    • http://loaminoo.linkpc.net/1095093092097098/Remnant-A-Caldwell-amp-Feximal-Whyborne-amp-Griffin-Mystery-The-Secret-Cas