Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c956c6e8e7b1f7…

MALICIOUS

PDF

75.6 KB Created: 2021-03-26 13:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11346a5950f4c461440347cc405c36ce SHA-1: b336e92f21d7d369af102d0cdf206750984c923d SHA-256: 06c956c6e8e7b1f7d433f0d93a424069ef49d9c0f625d1eec5db7998df3f4b9f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, characteristic of a link farm, designed to direct users to other PDF documents. The document body suggests a lure for downloading a movie, which is a common tactic for phishing or malware distribution. The presence of ML and ClamAV detections further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://resalured.ru/wix?keyword=ice+age+4+full+movie+in+hindi+free+download+online
    • http://kanshoper.site/brussels_midi_tourist_informationfr5q4.pdf
    • https://jixusalozexifan.weebly.com/uploads/1/3/1/4/131407855/kesemake.pdf
    • http://xijulefabogi.getenjoyment.net/jelavenijib.pdf
    • https://koterevimudo.weebly.com/uploads/1/3/4/3/134342185/zimifepusemuzezif.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zuvovoxigumuz/fesuborawobusajosiba.pdf
    • https://s3.amazonaws.com/mexesazaxasa/73810239074.pdf
    • http://naxefugoxodikow.atwebpages.com/diserazatege.pdf
    • http://gexefafuli.rf.gd/c_s_rao.pdf
    • https://s3.amazonaws.com/banula/wulometeju.pdf
    • https://s3.amazonaws.com/zidosozawok/81948478044.pdf
    • https://s3.amazonaws.com/rodiligarexo/vetafepa.pdf
    • http://pagitewuzowika.epizy.com/zudiwifolegibez.pdf
    • https://s3.amazonaws.com/tuxutedi/captain_america_coloring_sheet_free.pdf
    • http://xinifaduzinuvu.onlinewebshop.net/29835985640.pdf
    • http://kabuzore.atwebpages.com/months_of_the_year_in_french_worksheet.pdf
    • https://s3.amazonaws.com/jeduzizonox/fortinet_fortinac_datasheet.pdf
    • https://s3.amazonaws.com/wiwuxot/59010215513.pdf
    • http://fuxunowelujuxa.atwebpages.com/59146872657.pdf
    • https://s3.amazonaws.com/jezaxojipevu/47282201267.pdf
    • https://s3.amazonaws.com/gedesisumi/frontera_movie_parents_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8a4.bin
75bcf3252cc1086dca62d134019e0edf8c2517294f17dcdc7781fda2c6acc6c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A4 5436 bytes
font_01_sfnt_off0000fb13.bin
78b46bd48e6844d2a8a3610c3872bc5d70797153c5c87df74cc5f744d72c9320
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB13 10936 bytes