Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4c343ccb3f7b85e…

MALICIOUS

PDF

17.7 KB Created: 2019-07-29 07:08:51 +01:00 Authoring application: mPDF 5.7
MD5: f1e9b54063219ea33d65673d2acf01b3 SHA-1: 4106e4f26ab80ed56c4bc4526d7a328fdb75029d SHA-256: f4c343ccb3f7b85e5b2b908897684745da9d2244572fafeeecf47fd629bbefe3
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, a technique often used for SEO manipulation or to redirect users to malicious websites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, and the document body was not readable. The primary attack pattern observed is the mass linking to external domains, specifically to URLs hosted on 'cefasfese.4pu.com'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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://cefasfese.4pu.com/1736730738731739/If-It-Fornicates-Market-Garden-4-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/5734733731733735/Tactical-Management-in-the-Secular-Bear-Market-How-Tactical-Management-and-Market-Phases-Can-Help-Manage-Risk-and-Make-Money-in-the-Secular-Bear-Market-by-Tahar-Mjigal.pdf
    • http://cefasfese.4pu.com/7731732733732/You-Can-Be-a-Stock-Market-Genius-Uncover-the-Secret-Hiding-Places-of-Stock-Market-Profits-by-Joel-Greenblatt.pdf
    • http://cefasfese.4pu.com/1738735731738739/To-Market-To-Market-by-Anne-Miranda.pdf
    • http://cefasfese.4pu.com/4735734737734731/The-Meat-Market-Series-Boxed-Set-Meat-Market-1-3-by-Baylee-Crush.pdf
    • http://cefasfese.4pu.com/7737733736731736/Herb-Garden-Design-Planting-with-Purpose-The-garden-bookshelf-by-Ethne-Clarke.pdf
    • http://cefasfese.4pu.com/4735735731739732/Humility-Garden-Garden-of-Salt-1-by-Felicity-Savage.pdf
    • http://cefasfese.4pu.com/1730736739732739735/Easy-Garden-Projects-to-Make-Build-and-Grow-100-Do-It-Yourself-Ideas-to-Help-You-Grow-Your-Best-Garden-Ever-by-Barbara-Pleasant.pdf
    • http://cefasfese.4pu.com/1738738731738/Garden-Butterflies-of-North-America-A-Gallery-of-Garden-Butterflies-amp-How-to-Attract-Them-by-Rick-Mikula.pdf
    • http://cefasfese.4pu.com/1739739733732736/It-Was-Always-You-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/6733733730730/Static-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/1736730736734734/With-The-Band-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/2737737739730736/For-The-Living-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/2738737738739737/Wireless-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/7735739736739732/For-The-Living-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/2735737735739732/Wireless-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/4737736730736737/Hostile-Ground-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/1739735731739737/The-Watch-Red-1-by-Amanda-Witt.pdf
    • http://cefasfese.4pu.com/4735733733738732/Hostile-Ground-by-L-A-Witt.pdf
    • http://cefasfese.4pu.com/2732736733733736/The-Given-amp-The-Taken-Tooth-amp-Claw-1-by-L-A-Witt.pdf

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