Malicious PDF — malware analysis report

Static analysis result for SHA-256 8245b88c96ee5d41…

MALICIOUS

PDF

76.5 KB Created: 2021-03-20 02:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: cd308166f8086fd872adcf6936537cbc SHA-1: 625f645c7dd18dbbb3256d5c5dab40f1874625b9 SHA-256: 8245b88c96ee5d418a20b07070781857f2a9e940cc9127332d87584a96888057
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to 'zajinet.ru/strik'. This URL, combined with the document body's deceptive content, suggests a phishing or scam attempt to redirect users to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://zajinet.ru/strik?utm_term=air+fryer+chicken+breast+recipes+gluten+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425738/normal_60372c294e82f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_600d8348d33ef.pdfIn PDF document text
    • http://fusozurima.22web.org/literary_theory_and_criticism_an_introduction.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5fdc1561d98f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393925/normal_6023ca6e31c0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d85b1738-a471-4043-b59e-116b2bb794a3.filesusr.com/ugd/97927e_2c1ef127ba7047cba8760f8cb72eecf5.pdf?index=trueIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_327b065b8f7d4c76ab56bb80d94f8bfb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/commando_3_game_free_apk.pdfIn PDF document text
    • http://jonegukum.epizy.com/properties_of_addition_grade_1_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/free_slots_games_no_no_registration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16fe50d-a40e-4669-836c-73a4bf74ea53/cobra_29_ltd_classic_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/feelings_and_emotions_worksheet_for_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/kupetuguguno.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/anatomie_de_l_appareil_urinaire_cours.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/66880687770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a0951bb-8870-4f1f-b1a9-86c7aa48410f/the_color_of_magic_streaming.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/how_to_add_transmission_fluid_to_a_2005_vw_beetle.pdfIn PDF document text
    • http://kupikobu.epizy.com/voted.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/lozuvifulefanazipim.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/33673881064.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/whats_better_logic_or_fl_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/pelerunejawuza.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_off0000eb76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB76 5572 bytes
SHA-256: 95a6b722faf4c12400ce15164ac030415a9327ea84454f953e103d9798304a1b
font_01_sfnt_off0000fe74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE74 11316 bytes
SHA-256: 252f962421ac6f543301305fb7776b96320b37653700c2b564821a4c41ad176a

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