Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4255960682a1486…

MALICIOUS

PDF

85.5 KB Created: 2021-03-16 04:54:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56f712273be43b61dceee66e55ca86da SHA-1: 22ec3ff5bd62e778bee7a37ff12fbe480fefe08f SHA-256: b4255960682a1486a3ee73253fccd2edffedadf18ebfed2245150528c736e15a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to resetting a car's airbag light, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/strik?utm_term=how+to+reset+airbag+light+on+chevy
    • http://nashremont.site/xezivoguzonmmika.pdf
    • https://static.s123-cdn-static.com/uploads/4413118/normal_5fc5ab9a11647.pdf
    • http://pazifelurup.medianewsonline.com/louisville_slugger_upm_45_blue_flame_pitching_machine_canada.pdf
    • http://saniwigudovo.scienceontheweb.net/11464561370.pdf
    • http://opt15.ru/doxavegeluzxo3ng.pdf
    • http://juxowupekabaf.mygamesonline.org/revista_cero_en_conducta_numero_53.pdf
    • http://english-10.site/88662072230i2sb2.pdf
    • https://static.s123-cdn-static.com/uploads/4421943/normal_6007a4ac470e4.pdf
    • https://static.s123-cdn-static.com/uploads/4404984/normal_5feda3c09e75d.pdf
    • http://nemugub.mywebcommunity.org/nikon_coolpix_p610_price_in_bangladesh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mulerux/conflict_of_interest_declaration_template.pdf
    • https://s3.amazonaws.com/jemazejodep/pokapulivezovawuxirivev.pdf
    • https://uploads.strikinglycdn.com/files/12fbf1d6-4848-4e70-9c90-c5bb461ea68e/51880643068.pdf
    • https://s3.amazonaws.com/dosalapasenow/annabelle_full_movie_in_tamil_dubbed.pdf
    • http://xowobovu.myartsonline.com/does_short_term_medical_insurance_cover_pregnancy.pdf
    • https://uploads.strikinglycdn.com/files/9d891c37-3f4e-4184-980b-e8515b0195ff/17286348807.pdf
    • https://s3.amazonaws.com/genukopapovixo/bakoponowuwozujileban.pdf
    • https://s3.amazonaws.com/vixuwogetiv/arizer_solo_2_instruction_manual.pdf
    • https://s3.amazonaws.com/zexozavo/free_mcafee_antivirus_2019.pdf
    • https://s3.amazonaws.com/daniwodug/pizefare.pdf
    • https://uploads.strikinglycdn.com/files/5bb11935-8d19-47ba-b890-83a9bf151209/xoliritavowo.pdf
    • https://uploads.strikinglycdn.com/files/5a2b97d5-6b21-48b4-afd5-c010e497548d/when_did_doctors_do_house_calls.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4d6.bin
792e288023e4fbe73a0351c4e4cf94c19217598e688914c0413f09f13c1160d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 6568 bytes
font_01_sfnt_off00010523.bin
0a5a3d8868f0bc29209be46e4a617fe7ae225cf1b9b51a7cd5b8e01dfa1bc29e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10523 5416 bytes
font_02_sfnt_off0001179c.bin
72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179C 2268 bytes
font_03_sfnt_off000121ae.bin
f1f6d468f88bbd8d00e08974145ac1d8a3dae7f6917f376c7a56adf709a4079f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121AE 11328 bytes

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