Malicious PDF — malware analysis report

Static analysis result for SHA-256 845c5426ff8aa5ff…

MALICIOUS

PDF

19.1 KB Created: 2019-05-05 16:53:04 +01:00 Authoring application: mPDF 5.7
MD5: 86745fa4ac895177257e04f50936b785 SHA-1: 7ea4362de426a26515672e5311c0c4cf345708de SHA-256: 845c5426ff8aa5ff5bba4e86e88d35bba7ea180dc56c6a24db530729a2697411
60 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous embedded URLs. These URLs, such as http://loaminoo.linkpc.net/3090092099094097/The-Mermaid-Girl-A-Story-by-Erika-Swyler.pdf, are likely used to manipulate search engine rankings or redirect users to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate intent beyond the link farm. The primary attack pattern appears to be SEO abuse or a redirection scheme.

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/3090092099094097/The-Mermaid-Girl-A-Story-by-Erika-Swyler.pdf
    • http://loaminoo.linkpc.net/3098094091093091/The-Mermaid-Girl-A-Story-by-Erika-Swyler.pdf
    • http://loaminoo.linkpc.net/3097094095093092/Mermaid-Girl-by-Xequina.pdf
    • http://loaminoo.linkpc.net/2096091091090094/Flaming-Iguanas-An-Illustrated-All-Girl-Road-Novel-Thing-by-Erika-Lopez.pdf
    • http://loaminoo.linkpc.net/2098098097091099/An-Aspiring-Escort-The-Making-of-A-High-Class-Call-Girl-by-Erika-Night.pdf
    • http://loaminoo.linkpc.net/1097090099097094/An-Aspiring-Escort-The-Making-of-a-High-Class-Call-Girl-by-Erika-Night.pdf
    • http://loaminoo.linkpc.net/4095092091096098/Erika-s-Story-by-Ruth-Vander-Zee.pdf
    • http://loaminoo.linkpc.net/2099090098098094/They-Call-Me-Mad-Dog-A-Story-for-Bitter-Lonely-People-by-Erika-Lopez.pdf
    • http://loaminoo.linkpc.net/2090094099090097/The-Little-Mermaid-Ursula-My-Side-of-the-Story-3-by-Daphne-Skinner.pdf
    • http://loaminoo.linkpc.net/1090093097091098092/The-Mermaid-Catches-Her-Mate-A-Nocturne-Falls-Universe-story-by-Jax-Cassidy.pdf
    • http://loaminoo.linkpc.net/2090094099096092/No-Kidding-Mermaids-Are-a-Joke-The-Story-of-the-Little-Mermaid-as-Told-by-the-Prince-by-Nancy-Loewen.pdf
    • http://loaminoo.linkpc.net/1091090095096091/Mermaid-Queen-The-Spectacular-True-Story-Of-Annette-Kellerman-Who-Swam-Her-Way-To-Fame-Fortune-Swimsuit-History-by-Shana-Corey.pdf
    • http://loaminoo.linkpc.net/1091090097093092093/Entscheidungen-Des-Reichsgerichts-in-Zivilsachen-Sammlung-Der-Noch-Wichtigen-Entscheidungen-Nach-Fachgebieten-Geordnet-Gruppe-3-Handelsrecht-Gesamtreg-Zu-Gruppe-3-Handelsrecht-Bearb-Von-Erika-Schimmelpfennig-by-Erika-Schimmelpfennig.pdf
    • http://loaminoo.linkpc.net/4098099097099090/Story-of-a-Girl-by-Sara-Zarr.pdf
    • http://loaminoo.linkpc.net/3094095098093092/The-V-Girl-A-Coming-of-Age-Story-by-Mya-Robarts.pdf
    • http://loaminoo.linkpc.net/4094097098/The-V-Girl-A-Coming-of-Age-Story-by-Mya-Robarts.pdf
    • http://loaminoo.linkpc.net/4090097092096099/CHANGES-A-GIRL-Z-Prequel-A-Zombie-Story-by-C-A-Verstraete.pdf
    • http://loaminoo.linkpc.net/2099090091092/The-Story-of-Beautiful-Girl-by-Rachel-Simon.pdf
    • http://loaminoo.linkpc.net/3099097099094092/The-Story-of-Beautiful-Girl-by-Rachel-Simon.pdf
    • http://loaminoo.linkpc.net/4098095092094097/The-Story-of-Beautiful-Girl-by-Rachel-Simon.pdf
    • http://loaminoo.linkpc.net/1090