Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c643942bc29eb89…

MALICIOUS

PDF

30.1 KB Created: 2019-04-30 03:13:04 +01:00 Authoring application: mPDF 5.7 First seen: 2021-08-20
MD5: b46b08010c782a166040d0dba869f39e SHA-1: 60dc9f3a86b3b3c36756d66eb2574d1a5330ed68 SHA-256: 6c643942bc29eb89bbf594fd30ae3868fc78812bfceea07af1a2af338e3b81a7
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, which is a common technique for distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest an attempt to trick the user into downloading a secondary payload, likely disguised as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9670

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://muicuiu.dumb1.com/1a00a00a08a05a07a05/111-Gr-nde-den-Ruhrpott-zu-lieben-Eine-Liebeserkl-rung-an-die-gro-artigste-Region-der-Welt-by-Kai-Twilfer.pdf In PDF document text
    • http://muicuiu.dumb1.com/1a00a01a00a09a07a05/111-Gr-nde-Apple-zu-lieben-Eine-Verbeugung-vor-der-coolsten-Marke-der-Welt-by-Frank-M-ller.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a03a01a08a00a05/Katastrophe-Und-Hoffnung-Eine-Geschichte-Der-Welt-In-Unserer-Zeit-Eine-Auswahlausgabe-by-Carroll-Quigley.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a01a00a09a07a06/111-Gr-nde-sich-selbst-zu-lieben-Eine-kleine-Verbeugung-vor-der-eigenen-Gro-artigkeit-by-Holger-Reichard.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a00a06a07a03a00/Warum-wir-Hunde-lieben-Schweine-essen-und-K-he-anziehen-Karnismus---eine-Einf-hrung-by-Melanie-Joy.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a09a02a04a05a09/111-Gr-nde-Two-And-A-Half-Men-zu-lieben-Eine-Liebeserkl-rung-an-die-wohl-gro-artigste-Sitcom-aller-Zeiten-by-Thorsten-Wortmann.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a01a04a05a06a08/Tugenden-f-r-eine-bessere-Welt-by-Leonardo-Boff.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a01a09a08a04a09/Eine-Geschichte-Der-Welt-In-100-Objekten-by-Neil-MacGregor.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a01a04a06a06a01/P-dagogisches-Texte-f-r-eine-bessere-Welt-1-by-Walter-Benjamin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a09a02a08a07a03/Die-Nacht---Reise-in-eine-verschwindende-Welt-by-Paul-Bogard.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a01a07a02a07a07/Fighter-Wing-Eine-Reise-In-Die-Welt-Der-Modernen-Kampfflugzeuge-by-Tom-Clancy.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a04a03a00a05a01/Wie-man-in-eine-Seifenblase-schl-pft-Die-Welt-der-Mathematik-in-100-Experimenten-by-Albrecht-Beutelspacher.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a00a05a06a07a06/Wale-und-Delfine---Eine-emotionale-Reise-in-die-Welt-der-sanften-Riesen-by-Isabelle-Groc.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a02a07a04a08a07/Wiedersehen-im-Caf-am-Rande-der-Welt-Eine-inspirierende-Reise-zum-eigenen-Selbst-by-John-P-Strelecky.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a00a05a01a02a05/Das-Seelenleben-der-Tiere-Liebe-Trauer-Mitgef-hl---erstaunliche-Einblicke-in-eine-verborgene-Welt-by-Peter-Wohlleben.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a00a06a05a04a01/Eine-Reise-in-die-Welt-der-Puppen-und-Teddyb-ren-Geschichten-vom-Puppen--und-B-rendoktor-by-Rosemarie-Straub.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a01a03a08a00a09/Ich-amp-Jimy-Mein-kleiner-Bruder-Jimy-ist-auf-die-Welt-gekommen-wie-eine-Rakete-by-Julia-Peglow-Peters.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a02a07a09a01a05/Region-Brussel-Hauptstadt-Brussel-Gemeinde-in-Der-Region-Brussel-Hauptstadt-Ort-in-Der-Region-Brussel-Hauptstadt-by-Quelle-Wikipedia.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a09a02a04a08a06/DER-GL-CKLICHSTE-MANN-DER-WELT-EINE-KURZGESCHICHTE-DER-HOFFNUNG-VOM-AUTOR-DER-HOFFNUNG-KURZGESCHICHTE-NUMMER-1-VON-INSGESAMT-7-KURZGESCHICHTEN-by-JOREL-THE-CRYING-GENTLEMAN.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a01a07a06a06a02/Zentren-Der-Aufkl-Rung-IV-Der-D-Nische-Gesamtstaat-Kopenhagen---Kiel---Altona-by-Klaus-Bohnen.pdfIn PDF document text

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