Malicious PDF — malware analysis report

Static analysis result for SHA-256 05558fa4be4b770c…

MALICIOUS

PDF

16.9 KB Created: 2019-04-30 12:48:11 +01:00 Authoring application: mPDF 5.7
MD5: 12862ded198e04ffefc6c5c5b131b070 SHA-1: e11090844bbcfac38f429ba8d56132b57fa97a00 SHA-256: 05558fa4be4b770c057386988e261790031cd41c156c238fdbf9d11d1ad5efe0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spam campaign. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were extracted, the embedded URLs are the primary indicators of malicious activity, likely leading to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7616478-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7616478-0
  • 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/2095092096091/Riveted-Iron-Seas-3-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/6095095098092/The-Iron-Duke-Iron-Seas-1-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/8094090092098/Here-There-Be-Monsters-Iron-Seas-0-5-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/1095095098090097/Mina-Wentworth-and-the-Invisible-City-Iron-Seas-1-5-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/3095096099096093/Fire-amp-Frost-Iron-Seas-3-4-Code-of-Shadows-0-5-Midnight-Liaisons-2-3-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/3096093099092094/The-Kraken-King-and-the-Abominable-Worm-Iron-Seas-4-2-Kraken-King-2-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/2098090097094093/Frozen-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/1098091097099097/Demon-Forged-The-Guardians-5-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/7092093099097/Guardian-Demon-The-Guardians-8-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/9094096099094095/Die-Eiserne-See---Wilde-Sehnsucht-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/1093093099096094/Guardian-Demon-The-Guardians-8-by-Meljean-Brook.pdf
    • http://loaminoo.linkpc.net/2092098099094092/Iron-Men-Pirates-of-the-Narrow-Seas-3-by-M-Kei.pdf
    • http://loaminoo.linkpc.net/1097097090092095/Iron-Men-Pirates-of-the-Narrow-Seas-3-by-M-Kei.pdf
    • http://loaminoo.linkpc.net/9094099091091097/Iron-Fey-Series-Volume-1-The-Iron-King-Winter-s-Passage-The-Iron-Daughter-The-Iron-Queen-Summer-s-Crossing-by-Julie-Kagawa.pdf
    • http://loaminoo.linkpc.net/5090097092/Riveted-Saints-of-Denver-3-by-Jay-Crownover.pdf
    • http://loaminoo.linkpc.net/3094090098099095/Riveted-Saints-of-Denver-3-by-Jay-Crownover.pdf
    • http://loaminoo.linkpc.net/3090092095096097/Riveted-Whispering-Pines-Ranch-5-5-Guards-of-Folsom-0-5-by-S-J-D-Peterson.pdf
    • http://loaminoo.linkpc.net/8092092095092098/Iron-Rails-Iron-Men-and-the-Race-to-Link-the-Nation-The-Story-of-the-Transcontinental-Railroad-by-Martin-W-Sandler.pdf
    • http://loaminoo.linkpc.net/1097098098092095/Iron-amp-Wine-The-Iron-World-Series-1-by-Candace-Osmond.pdf
    • http://loaminoo.linkpc.net/9094099091091095/Iron-King-4-The-Iron-Fey-Manga-4-by-Julie-Kagawa.pdf

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