Malicious PDF — malware analysis report

Static analysis result for SHA-256 188909ac7ed97e9e…

MALICIOUS

PDF

70.2 KB Created: 2021-03-28 17:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 683a583b6c59f26da3f87aae3bf62ff7 SHA-1: 947af445d62d3529d8ea86cb0afe32233f00d8fe SHA-256: 188909ac7ed97e9e3cfdec778c7ba94e3e5e30592fee3f79380584daf47d80d5
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/award?keyword=basic+grammar+learning+pdf PDF link annotation
    • https://cdn.sqhk.co/junigofulum/ejjhasV/hide_n_seek_bakersfield.pdfIn PDF document text
    • http://shopyou.online/vuxagirefasony4vte.pdfIn PDF document text
    • http://bepufuz.22web.org/domain_and_range_of_function_worksheet.pdfIn PDF document text
    • http://studytogether.fun/hum_sab_bolte_miya_bhai_ringtonepltnm.pdfIn PDF document text
    • https://cdn.sqhk.co/tukepola/icigRik/1516508988.pdfIn PDF document text
    • http://sogixusi.medianewsonline.com/arbonne_pumpkin_protein_powder_recipes.pdfIn PDF document text
    • https://cdn.sqhk.co/derepinejabi/hgjhPoQ/fiji_airways_reviews_business_class.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/zumezeviwakiz/united_nations_convention_on_biological_diversity.pdfIn PDF document text
    • http://zoxarulal.rf.gd/51489492420.pdfIn PDF document text
    • http://dowuxufab.epizy.com/pupolifusob.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/posco_plant_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/biological_half_life_of_iodine_131.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/53154374425.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/introduction_to_mendelian_genetics_worksheet_answer_key.pdfIn PDF document text
    • http://pipotaxi.rf.gd/93608882475.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/mixture_problems_extra_practice_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/lozitixuxa.pdfIn PDF document text
    • http://gixejemazob.myartsonline.com/puravisozalozotolifeto.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_off0000d350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD350 5524 bytes
SHA-256: 978170426f90e34f612f237f7ea9e2c8e63ac06b47fac0ee53b0912dbed9408a
font_01_sfnt_off0000e604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 10664 bytes
SHA-256: 26067b2bfc4c5630e25e9396c44b53037882dce4c289dd9141a89cb1720b5377