Malicious PDF — malware analysis report

Static analysis result for SHA-256 526533903ecb19f3…

MALICIOUS

PDF

16.8 KB Created: 2019-04-30 06:37:14 +01:00 Authoring application: mPDF 5.7
MD5: 7dcd8d66ea8129a629d9a50495dd40b9 SHA-1: 92a5a1e0ff570f8ec828c4901b0b015ea20f4a78 SHA-256: 526533903ecb19f3e0dd0c0fb9d0e30b87245c127385b94c6bb5a8f00829ee5e
60 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a large number of embedded external links, identified as a PDF SEO link farm. While the individual URLs are currently marked as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to distribute further payloads. No scripts were extracted from this sample, and the document body was unreadable, limiting further analysis of the specific lure.

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/1090097091097093091/Tales-from-Null-City-From-the-World-of-Null-City-Book-3-by-Barb-Taub.pdf
    • http://loaminoo.linkpc.net/1090097091095098099/Null-Null-Siebzig-Mord-in-Hangzhou-by-Marlies-Ferber.pdf
    • http://loaminoo.linkpc.net/1090097091095098096/Gary-Null-s-Power-Aging-by-Gary-Null.pdf
    • http://loaminoo.linkpc.net/2095091097090/The-World-of-Null-A-by-A-E-van-Vogt.pdf
    • http://loaminoo.linkpc.net/4098093094096091/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Angels-City-of-Lost-Souls-The-Mortal-Instruments-1-5-by-Cassandra-Clare.pdf
    • http://loaminoo.linkpc.net/3097096090091/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Angels-City-of-Lost-Souls-The-Mortal-Instruments-1-5-by-Cassandra-Clare.pdf
    • http://loaminoo.linkpc.net/1090097091096096092/The-World-of-Null-A-Universe-Maker-by-A-E-van-Vogt.pdf
    • http://loaminoo.linkpc.net/2096096090095093/Null-States-Book-Two-of-the-Centenal-Cycle-by-Malka-Ann-Older.pdf
    • http://loaminoo.linkpc.net/8092096090092/The-Complete-Tales-of-the-City-Tales-of-the-City-1-6-by-Armistead-Maupin.pdf
    • http://loaminoo.linkpc.net/4092093092093092/Keys-to-the-City-Tales-of-a-New-York-City-Locksmith-by-Joel-Kostman.pdf
    • http://loaminoo.linkpc.net/4096099091093095/More-Tales-of-the-City-Tales-of-the-City-2-by-Armistead-Maupin.pdf
    • http://loaminoo.linkpc.net/2091097099097094/More-Tales-of-the-City-Tales-of-the-City-2-by-Armistead-Maupin.pdf
    • http://loaminoo.linkpc.net/9099095099094/More-Tales-of-the-City-Tales-of-the-City-2-by-Armistead-Maupin.pdf
    • http://loaminoo.linkpc.net/3093093095096/Tales-of-the-City-Tales-of-the-City-1-by-Armistead-Maupin.pdf
    • http://loaminoo.linkpc.net/4090090097091093/The-Sunken-City-and-Other-Tales-From-Round-the-World-by-James-McNeill.pdf
    • http://loaminoo.linkpc.net/2095096096092094/Strumpet-City-One-City-One-Book-Edition-by-James-Plunkett.pdf
    • http://loaminoo.linkpc.net/1090097091097094090/Null-Set-and-Other-Stories-by-George-Chambers.pdf
    • http://loaminoo.linkpc.net/1090097091097099090/Null-Immortalis-Nemonymous-10-by-D-F-Lewis.pdf
    • http://loaminoo.linkpc.net/1091097098091092091/Von-Null-auf-Liebe-mit-4-R-dern-by-Andrea-Bielfeldt.pdf
    • http://loaminoo.linkpc.net/1090097091098090097/Null-Models-In-Ecology-by-Nicholas-J-Gotelli.pdf
    • http://loaminoo.linkpc.net/3097096090091/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Ang

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