Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d6167772b04a3f…

MALICIOUS

PDF

19.1 KB Created: 2019-05-26 23:31:01 +01:00 Authoring application: mPDF 5.7
MD5: ceeca0d8a213a195be7a5627a8b37114 SHA-1: 17b3eda184a6af9040a5f5ce1dcdcca92591579e SHA-256: d5d6167772b04a3fb4c65463ba085073c32a906290c4896752fe9019d70e961b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was identified as malicious by an ML classifier and contains a large number of embedded URLs, forming a link farm. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' which suggests the document's purpose is to manipulate search engine results or distribute content via these links. While no scripts were extracted, the sheer volume of links and the ML classification point towards a malicious intent, likely related to SEO poisoning or a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/9737730736737731/Africa-Unchained-The-Blueprint-for-Africa-s-Future-by-George-B-N-Ayittey.pdf
    • http://cefasfese.4pu.com/3736737730735732/Nostalgia-for-the-Future-West-Africa-after-the-Cold-War-by-Charles-Piot.pdf
    • http://cefasfese.4pu.com/8737737731737732/New-Light-on-Dark-Africa-Being-the-Narrative-of-the-German-Emin-Pasha-Expedition-Its-Journeyings-and-Adventures-Among-the-Native-Tribes-of-Eastern-Equatorial-Africa-the-Gallas-Massais-Wasukuma-Etc-on-the-Lake-Baringo-and-the-Victoria-Nyanza-by-Carl-Peters.pdf
    • http://cefasfese.4pu.com/3734736730737731/Western-Africa-and-Cabo-Verde-1790s-1830s-Symbiosis-of-Slave-and-Legitimate-Trades-by-George-E-Brooks.pdf
    • http://cefasfese.4pu.com/9737730738731732/In-the-Shadow-of-Plenty-The-Biblical-Blueprint-for-Welfare-Biblical-Blueprint-Series-4-by-George-Grant.pdf
    • http://cefasfese.4pu.com/9737730736737734/Blueprint-for-Action-A-Future-Worth-Creating-by-Thomas-P-M-Barnett.pdf
    • http://cefasfese.4pu.com/4733737738738735/The-Africa-Bar-by-Nick-Maes.pdf
    • http://cefasfese.4pu.com/1731735733734736737/The-First-World-War-in-Africa-by-Hew-Strachan.pdf
    • http://cefasfese.4pu.com/3733732733730/Out-of-Africa-by-Isak-Dinesen.pdf
    • http://cefasfese.4pu.com/4733738730734734/Africa-in-History-by-Basil-Davidson.pdf
    • http://cefasfese.4pu.com/7731732733733735/Africa-Volume-2-by-lis-e-Reclus.pdf
    • http://cefasfese.4pu.com/9739731738733735/This-Is-South-Africa-by-Peter-Borchert.pdf
    • http://cefasfese.4pu.com/6735730737732738/Africa-Tomorrow-by-Edem-Kodjo.pdf
    • http://cefasfese.4pu.com/4739739730730736/My-Children-My-Africa-by-Athol-Fugard.pdf
    • http://cefasfese.4pu.com/9739734739737/Around-Africa-on-My-Bicycle-by-Riaan-Manser.pdf
    • http://cefasfese.4pu.com/1730733738730732737/Hennessy-in-Africa-by-Vincent-Banville.pdf
    • http://cefasfese.4pu.com/6730739731734736/Why-Rimbaud-Went-to-Africa-by-David-Lerner.pdf
    • http://cefasfese.4pu.com/1730736739737731733/Explorers-Into-Africa-by-Josephine-Kamm.pdf
    • http://cefasfese.4pu.com/4739734732735738/My-Children-My-Africa-by-Athol-Fugard.pdf
    • http://cefasfese.4pu.com/2738737731732731/Nowhere-in-Africa-An-Autobiographical-Novel-by-Stefanie-Zweig.pdf

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