Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee43f1e199ad854…

MALICIOUS

PDF

71.5 KB Created: 2021-03-13 13:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 454ce8b128967fa4030120e468ab95a0 SHA-1: 194665cb66e75afa401d546eb14b3348fb3459e8 SHA-256: fee43f1e199ad854e7ce089f496c91778445e0da29a8047438830c71dd97e0cb
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL leading to a domain associated with malicious activity. The document body, though heavily obfuscated, suggests a lure related to educational materials, likely to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/award?keyword=spoken+english+pdf+books+in+tamil PDF link annotation
    • http://fofolep.mywebcommunity.org/40064839662.pdfIn PDF document text
    • http://boraguw.medianewsonline.com/ebt_card_customer_service_number_pa.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/plantronics_voyager_8200_uc_headset.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/duzikisa.pdfIn PDF document text
    • http://xobazosapiru.22web.org/fedipeziminawepasekiwiv.pdfIn PDF document text
    • http://kafalogu.22web.org/pc_performance_test_benchmark.pdfIn PDF document text
    • http://palupalukagu.mygamesonline.org/72111561898.pdfIn PDF document text
    • http://liberum.sportsontheweb.net/safakuxafifizuj.pdfIn PDF document text
    • http://manovina.mypressonline.com/junulomizomusebisusikug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2876fe34-ce42-447a-8df7-14062d8af19a/vocabulary_workshop_level_f_unit_6_completing_the_sentence.pdfIn PDF document text
    • http://bajekixizosi.myartsonline.com/how_much_is_samsung_s9_screen_repair_in_nigeria.pdfIn PDF document text
    • http://gubadif.myartsonline.com/51902482006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dbcd1ce-6cfc-4b4b-add2-6f4ad1149989/dunkin_donuts_frozen_coffee_calories_large.pdfIn PDF document text
    • http://botetuvixomidiz.epizy.com/academic_performance_of_student_athletes_thesis.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/dadapikexobolotenekumibek.pdfIn PDF document text
    • http://keguwaburafokul.epizy.com/wuvikibuvekepisebaderepux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/104717b1-8f65-4445-ad14-926e654bb2d0/72605258383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005bc61a-00eb-4812-a81c-02869643a9d9/baofeng_uv-5r_user_guide.pdfIn PDF document text
    • http://najenovatuxi.rf.gd/new_visiting_card_design_free.pdfIn PDF document text
    • http://nutajowaga.rf.gd/honda_generator_eu2000i_companion_rv_parallel_cables.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/noxokuzelirapegenuw.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/ashton_irwin_superbloom_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/sims_3_worlds.pdfIn PDF document text
    • http://xedonufil.rf.gd/sakenamebakozema.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_off0000d8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F8 5664 bytes
SHA-256: d95ae91c35c0ff2e5fa91b2069de3c7adc12a3aba571bec8fac3439966c70cfa
font_01_sfnt_off0000ec19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC19 10064 bytes
SHA-256: 6169f3d8ecf04c3f2bbb1006aa543115c5d38e0ace79668e7e5f2269e3acd625

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