Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc9e8f580c9fc85…

MALICIOUS

PDF

27.6 KB Created: 2019-05-02 05:11:34 +01:00 Authoring application: mPDF 5.7
MD5: dcd3bd548ba9eb0be02a8102cfab5a29 SHA-1: 65291651555abe16b9d0bec992f5c716d694b577 SHA-256: cfc9e8f580c9fc851820abce6a4617a7e3b2ec640955680986bba1516395d1b4
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. While the specific intent is unclear due to the lack of script content and the benign reputation of the initial URLs, this pattern is often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious.

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/2738739738731734/Griffin-s-Daughter-Griffin-s-Daughter-Trilogy-1-by-Leslie-Ann-Moore.pdf
    • http://cefasfese.4pu.com/2731733738730733/The-Griffin-s-Boy-The-Griffin-Riders-Chronicles-1-by-Julia-Hughes.pdf
    • http://cefasfese.4pu.com/7734733735730/Daughter-of-Kaos-Daughter-Trilogy-3-by-C-M-Owens.pdf
    • http://cefasfese.4pu.com/3730732737736/Griffin-s-Fire-Griffin-2-by-Darby-Karchut.pdf
    • http://cefasfese.4pu.com/5730731737731736/Official-Book-Club-Selection-A-Memoir-According-to-Kathy-Griffin-by-Kathy-Griffin.pdf
    • http://cefasfese.4pu.com/9739734731730730/So-you-think-you-babysit-monsters-The-Abercrombie-Family-Business-Totally-True-Tir-Griffin-Story-1-by-Leslie-A-Susskind.pdf
    • http://cefasfese.4pu.com/1735733732737738/Remnant-A-Caldwell-amp-Feximal-Whyborne-amp-Griffin-Mystery-The-Secret-Casebook-of-Simon-Feximal-3-Whyborne-amp-Griffin-3-5-by-K-J-Charles.pdf
    • http://cefasfese.4pu.com/3737730732738732/Alexandria-In-Which-the-Extraordinary-Correspondence-of-Griffin-amp-Sabine-Unfolds-Morning-Star-Trilogy-2-by-Nick-Bantock.pdf
    • http://cefasfese.4pu.com/9730731739735/The-Gryphon-In-Which-the-Extraordinary-Correspondence-of-Griffin-amp-Sabine-Is-Rediscovered-Morning-Star-Trilogy-1-by-Nick-Bantock.pdf
    • http://cefasfese.4pu.com/1739736739734/The-Bishop-s-Daughter-A-Memoir-by-Honor-Moore.pdf
    • http://cefasfese.4pu.com/1736739733738739/Daughter-of-the-Siren-Queen-Daughter-of-the-Pirate-King-2-by-Tricia-Levenseller.pdf
    • http://cefasfese.4pu.com/6731735736739/The-Bishop-s-Daughter-Daughter-of-Lancaster-County-3-by-Wanda-E-Brunstetter.pdf
    • http://cefasfese.4pu.com/3735731730737731/The-President-s-Daughter-Daughter-Series-3-by-Eydie-Maggio.pdf
    • http://cefasfese.4pu.com/5738731738738/The-Complete-Mother-Daughter-Book-Club-Collection-The-Mother-Daughter-Book-Club-Much-Ado-About-Anne-Dear-Pen-Pal-Pies-amp-Prejudice-Home-for-the-Holidays-Wish-You-Were-Eyre-The-Mother-Daughter-Book-Club-1-6-by-Heather-Vogel-Frederick.pdf
    • http://cefasfese.4pu.com/6739734737735739/Woman-of-Color-Daughter-of-Privilege-Amanda-America-Dickson-1849-1893-by-Kent-Anderson-Leslie.pdf
    • http://cefasfese.4pu.com/4730738733739730/Deception-The-Courier-s-Daughter-Trilogy-2-by-C-J-Redwine.pdf
    • http://cefasfese.4pu.com/4733733736734730/Defiance-The-Courier-s-Daughter-Trilogy-1-by-C-J-Redwine.pdf
    • http://cefasfese.4pu.com/3739735730738737/Her-Mother-s-Daughter-A-Memoir-of-the-Mother-I-Never-Knew-and-of-My-Daughter-Courtney-Love-by-Linda-Carroll.pdf
    • http://cefasfese.4pu.com/4733732737734738/The-Vampire-Hunter-s-Daughter-Part-VI-The-Vampire-Hunters-Daughter-6-by-Jennifer-Malone-Wright.pdf
    • http://cefasfese.4pu.com/9732739732734/The-Peaceful-Daughter-s-Guide-to-Separating-from-A-Difficult-Mother-Freeing-Yourself-From-The-Guilt-Anger-Resentment-and-Bitterness-of-Being-Raised-The-Peaceful-Daughter-s-Guides-Book-1-by-Karen-C-L-Anderson.pdf
    • http://cefasfese.4pu.com/1735733732737738/Remnant-A-Caldwe

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