Malicious PDF — malware analysis report

Static analysis result for SHA-256 3217524fd0fdada4…

MALICIOUS

PDF

78.1 KB Created: 2021-05-11 16:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f1127eb4ec83f2c690992b4249213d62 SHA-1: 28eb6475a2f48edaa96f340912921c9095cac5cd SHA-256: 3217524fd0fdada476012e13aea52c8d434d36e2c4b290208227a15b5a54e2cb
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical PDF link farm detection and a ML classifier. It contains numerous external links, with one pointing to 'https://botokaw.ru/strik?utm_term=fitbit+flex+1+manual'. The presence of a large number of external links suggests an attempt to redirect users to potentially malicious content or to engage in SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=fitbit+flex+1+manual PDF link annotation
    • http://nujevujem.22web.org/mukijakojarubaxasu.pdfIn PDF document text
    • http://linikewi.iblogger.org/game_theory_economics.pdfIn PDF document text
    • http://genonobamubus.22web.org/33512308955.pdfIn PDF document text
    • https://cdn.sqhk.co/garoresolif/Zjjhjle/home_manager_jobs.pdfIn PDF document text
    • http://bitipusefotas.66ghz.com/divination_5e_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tizuvuwo/jgprjfl/scary_teacher_mod_apk_all_chapters_unlocked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dezajok/44960152950.pdfIn PDF document text
    • https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_59ad1003cecb47e5a0aa862840f82ca1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/c_d_jain_college_shrirampur_feedback_form.pdfIn PDF document text
    • https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_53b86fe328ed4d7eb2395c805286ad1d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/pamosanakezo.pdfIn PDF document text
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_1bbcafa84d9e4790a305bb385d9f3a13.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/gray_sheet_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/wings_of_fire_wiki_discord.pdfIn PDF document text
    • http://kavafaj.rf.gd/how_to_open_a_locked_frigidaire_oven_door.pdfIn PDF document text
    • http://voxunerejowiz.epizy.com/how_much_do_software_engineers_make_in_dubai.pdfIn PDF document text
    • http://zomekijisev.rf.gd/bible_quiz_and_answers.pdfIn PDF document text
    • http://vepilezora.epizy.com/99983407304.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/dd_campaigns_5e_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE810 4624 bytes
SHA-256: 7dfc242b694704e49cd7c881ab3b45bd879c5f402c55600dffca9602e1050d5e
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 10408 bytes
SHA-256: ccd402047a195873be494b9c74a7597b93507cfea641dafbac20c0e24ac71619
font_02_sfnt_off00011b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B62 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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