Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4aa2a91784e44d…

MALICIOUS

PDF

75.6 KB Created: 2021-02-26 10:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 130abc1ea842c8f7d192567fb9f4eca2 SHA-1: cfc30ddef37cb823fc4af9fbbdc556475bf31a83 SHA-256: 2b4aa2a91784e44d7e4222992136cc9996858ef86d6b305e98f9734ce21d5a52
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical ClamAV detection of 'Pdf.Phishing.Trojan'. An external URI pointing to 'resalured.ru' was extracted, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URL indicate a malicious intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=in+literature+what+is+a+foil PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487194/normal_601ae1861bba1.pdfIn PDF document text
    • https://cdn.sqhk.co/woxemumi/jEgiigC/heart_disease_meaning_medical.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/bgdiehg/58158824045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476429/normal_5fd2441e9dbed.pdfIn PDF document text
    • https://cdn.sqhk.co/fozuwasixeja/idiegfU/zone_max_drift_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/iaahbig/48444202255.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/oiiics3/flappy_bird_download_for_ti_84_plus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458852/normal_5ff262df38e35.pdfIn PDF document text
    • http://uuuuull.space/313175592606uf7j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500665/normal_6007d3ec2dcad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412778/normal_6006e205721c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/essay_topics_for_grade_7_icse.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/tewikigew.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/the_dj_song_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/61417279821.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA21 4884 bytes
SHA-256: d21ae50de7147f0cbd6fd0bf2f3456b2fc6d116048bb2f07b8b729ebdde84303
font_01_sfnt_off0000fac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC2 11556 bytes
SHA-256: a1d73a2c6e0bff8cb7558d70ebe696c308bc0eb3dda0ce15a5aa22dc58631409

Open this report in the interactive analyzer, or submit your own file for analysis.