Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c0b8f68b5ed0ad…

MALICIOUS

PDF

28.5 KB Created: 2019-06-04 10:28:09 +01:00 Authoring application: mPDF 5.7
MD5: 2516bced6a3ef5b761ff2fd43529da4f SHA-1: 56f639e67a20e1fa7570f259c5a58e44e7b7bf24 SHA-256: c8c0b8f68b5ed0ad549635339f1d0b00b05f4c3084b0f5083d59c19ac2ed805f
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. While many of these links were classified as benign, the sheer volume and structure suggest 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://cefasfese.4pu.com/9732738736/The-Wondering-Years-How-Pop-Culture-Helped-Me-Answer-Life-s-Biggest-Questions-by-Knox-McCoy.pdf
    • http://cefasfese.4pu.com/3735733735735734/Encounters-with-Jesus-Unexpected-Answers-to-Life-s-Biggest-Questions-by-Timothy-J-Keller.pdf
    • http://cefasfese.4pu.com/6731730739733737/Crash-Test-Girl-An-Unlikely-Experiment-in-Using-the-Scientific-Method-to-Answer-Life-s-Toughest-Questions-by-Kari-Byron.pdf
    • http://cefasfese.4pu.com/2735734739736739/Mom-Why-Do-My-Farts-Stink-Questions-Only-Mom-and-Science-Can-Answer-by-Carol-Mona.pdf
    • http://cefasfese.4pu.com/9736731730732/The-Widow-or-Widower-Next-Door-25-Widows-amp-Widowers-Answer-25-Questions-about-Losing-a-Mate-by-MaryLee-Robinson.pdf
    • http://cefasfese.4pu.com/4738737734734739/Speak-the-Culture-Britain-Be-Fluent-in-British-Life-and-Culture-by-Andrew-Whittaker.pdf
    • http://cefasfese.4pu.com/1731731734731738731/The-Well-Endowed-Stud-Every-Cuckold-s-Biggest-Fear-Every-Hotwife-s-Biggest-Desire-a-sizzling-tale-of-cheating-betrayal-and-adultery-by-a-roommate-with-an-enormous-massive-secret-by-Ronnie-Kinski.pdf
    • http://cefasfese.4pu.com/3736733732739730/The-Secret-of-Life-Wellness-The-Essential-Guide-to-Life-s-Big-Questions-by-Inna-Segal.pdf
    • http://cefasfese.4pu.com/1734735736737739/The-Great-War-One-Hundred-Stories-Of-One-Hundred-Words-Honouring-Those-Who-Lived-and-Died-One-Hundred-Years-Ago-by-Dawn-Knox.pdf
    • http://cefasfese.4pu.com/1739732730738734/Biggest-Brother-The-Life-of-Major-Dick-Winters-the-Man-Who-Led-the-Band-of-Brothers-by-Larry-Alexander.pdf
    • http://cefasfese.4pu.com/4732739734738739/How-to-Live-Or-a-Life-of-Montaigne-in-One-Question-and-Twenty-Attempts-at-an-Answer-by-Sarah-Bakewell.pdf
    • http://cefasfese.4pu.com/2737735734731737/Pathology-of-the-Elites-How-the-Arrogant-Classes-Plan-to-Run-Your-Life-by-Michael-Knox-Beran.pdf
    • http://cefasfese.4pu.com/3733736737734739/Knox-Volume-1-Knox-1-by-Cassia-Leo.pdf
    • http://cefasfese.4pu.com/3733730733730732/Raising-Grateful-Kids-in-an-Entitled-World-How-One-Family-Learned-That-Saying-No-Can-Lead-to-Life-s-Biggest-Yes-by-Kristen-Welch.pdf
    • http://cefasfese.4pu.com/4739738730736738/The-Answer-Grow-Any-Business-Achieve-Financial-Freedom-and-Live-an-Extraordinary-Life-by-John-Assaraf.pdf
    • http://cefasfese.4pu.com/1735739738735/O-Strange-New-World-American-Culture-the-Formative-Years-by-Howard-Mumford-Jones.pdf
    • http://cefasfese.4pu.com/9738735739730738/If-Questions-for-the-Game-of-Life-If-1-by-Evelyn-McFarlane.pdf
    • http://cefasfese.4pu.com/4735733737734739/What-Do-You-think-of-Me-Why-Do-I-Care-Answers-to-the-Big-Questions-of-Life-by-Edward-T-Welch.pdf
    • http://cefasfese.4pu.com/5734739731730739/SoulPancake-Chew-on-Life-s-Big-Questions-by-Rainn-Wilson.pdf
    • http://cefasfese.4pu.com/8738734738735733/History-s-Trickiest-Questions-450-Questions-That-Will-Stump-Amuse-and-Surprise-by-Paul-Kuttner.pdf
    • http://cefasfese.4pu.com/9736731730732/The-Widow-or-Widower-Next-D

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