Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ba822dfac602ac…

MALICIOUS

PDF

26.0 KB Created: 2019-04-30 01:56:23 +01:00 Authoring application: mPDF 5.7
MD5: 6a78bf285702b1c297a903f739358148 SHA-1: c2c44a6b9e0673a461dc99e562c0b47c9ff94997 SHA-256: b1ba822dfac602ac201048b524255c2dd2b29836bdb9f3918bf679d85c2b1489
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests a malicious intent, possibly for SEO manipulation or to distribute further malware. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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://seasasac.lflinkup.com/4da8da1da5da6da0/Russian-Popular-Culture-Entertainment-and-Society-Since-1900-by-Richard-Stites.pdf
    • http://seasasac.lflinkup.com/1da1da1da1da9da7da8/China-s-National-Minority-Education-Culture-Schooling-and-Development-by-Regie-Stites.pdf
    • http://seasasac.lflinkup.com/7da2da2da3da0da8/Art-And-The-Everyday-Popular-Entertainment-And-The-Circle-Of-Erik-Satie-by-Nancy-Lynn-Perloff.pdf
    • http://seasasac.lflinkup.com/1da3da9da4da0da2/Journey-for-Our-Time-The-Russian-Journals-of-the-Marquis-de-Custine-An-Intriguing-Look-at-the-Continuities-in-Russian-Politics-and-Society-by-Astolphe-de-Custine.pdf
    • http://seasasac.lflinkup.com/1da0da7da0da1da4da1/Albinism-in-Popular-Culture-by-Frederic-P-Miller.pdf
    • http://seasasac.lflinkup.com/7da0da1da9da4da1/-NatGeo-The-Most-Popular-Instagram-Photos-by-National-Geographic-Society.pdf
    • http://seasasac.lflinkup.com/1da0da1da8da7da7/Eyes-Wide-Open-Looking-for-God-in-Popular-Culture-by-William-D-Romanowski.pdf
    • http://seasasac.lflinkup.com/5da0da7da4da1da4/Hollywood-War-Machine-U-S-Militarism-and-Popular-Culture-by-Carl-Boggs.pdf
    • http://seasasac.lflinkup.com/5da8da7da6da8da0/Budapest-1900-A-Historical-Portrait-of-a-City-and-Its-Culture-by-John-Lukacs.pdf
    • http://seasasac.lflinkup.com/7da1da2da9da7da9/The-Gothic-in-Contemporary-Literature-and-Popular-Culture-Pop-Goth-by-Justin-Edwards.pdf
    • http://seasasac.lflinkup.com/6da2da5da7da3da2/Media-Virus-Hidden-Agendas-in-Popular-Culture-by-Douglas-Rushkoff.pdf
    • http://seasasac.lflinkup.com/6da6da5da3da1/Revaluation-1997-Essays-on-Philippine-Literature-Cinema-and-Popular-Culture-by-Bienvenido-L-Lumbera.pdf
    • http://seasasac.lflinkup.com/4da7da9da0da8da5/The-Politics-of-Being-a-Woman-Feminism-Media-and-21st-Century-Popular-Culture-by-Heather-Savigny.pdf
    • http://seasasac.lflinkup.com/6da5da8da5da3/Cultural-Fictions-Narratives-on-Philippine-Popular-Culture-Politics-and-Literature-by-Isidoro-M-Cruz.pdf
    • http://seasasac.lflinkup.com/9da1da3da3da6da0/Uneasy-Warriors-Gender-Memory-and-Popular-Culture-in-the-Japanese-Army-by-Sabine-Fr-hst-ck.pdf
    • http://seasasac.lflinkup.com/1da9da6da8da5da0/Culture-Power-and-the-State-Rural-North-China-1900-1942-by-Prasenjit-Duara.pdf
    • http://seasasac.lflinkup.com/1da5da9da3da3/The-Icon-and-the-Axe-An-Interpretive-History-of-Russian-Culture-by-James-H-Billington.pdf
    • http://seasasac.lflinkup.com/5da0da7da5da8da9/Working-Life-Factories-Townships-amp-Popular-Culture-on-the-Rand-1886-1940-by-Luli-Callinicos.pdf
    • http://seasasac.lflinkup.com/5da0da7da3da4da9/Rebellious-Civil-Society-Popular-Protest-and-Democratic-Consolidation-in-Poland-1989-1993-by-Grzegorz-Ekiert.pdf
    • http://seasasac.lflinkup.com/2da5da7da8da2da6/The-Rise-of-Respectable-Society-A-Social-History-of-Victorian-Britain-1830-1900-by-Francis-Michael-Longstreth-Thompson.pdf
    • http://seasasac.lflinkup.com/1da3da9da4da0da2/Journey-for-Our-Time-The-Russian-Journals-of-the-Marquis-de-Custine-An-Intriguing-Look-at-th

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