Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df4d48a0f7ab3b3…

MALICIOUS

PDF

73.2 KB Created: 2021-03-17 10:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b4921c3f218b1a0c62fbb356320419ea SHA-1: 52f34fa060f59f5cc888b2987aaa06d98aba731e SHA-256: 3df4d48a0f7ab3b31305e0bdb07bfc35329691d51ad2ba5b80a5ec21a1b4c739
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/award?keyword=marathi+baby+boy+names+list+pdf PDF link annotation
    • https://cdn.sqhk.co/kipezipilojo/yZ8jijj/35013008329.pdfIn PDF document text
    • http://richteam.site/seventh_day_adventist_hymnal_ppter8dr.pdfIn PDF document text
    • https://lidovoji.weebly.com/uploads/1/3/4/3/134313359/3180307.pdfIn PDF document text
    • http://theraisins.pro/how_to_pair_remote_to_hopper_3ik6ks.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/chhceyk/line_comics_app_apk.pdfIn PDF document text
    • http://fullcreditreport.info/what_is_meant_by_lady_pimpf3win.pdfIn PDF document text
    • http://b4shop.icu/fiddler_on_the_roof_broadway_cast_1964yt135.pdfIn PDF document text
    • https://cdn.sqhk.co/waladoved/jBgcfw7/north_south_expressway_malaysia_map.pdfIn PDF document text
    • https://gikowotezura.weebly.com/uploads/1/3/4/4/134493608/3685558.pdfIn PDF document text
    • http://belkwigs.com/how_to_program_a_remote_to_an_emerson_tv6s57j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_19b3ed101a674deba947757a8125a1a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/5368704727.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/sujotolev.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/como_hacer_amigos_e_influir_sobre_las_personas_ensayo.pdfIn PDF document text
    • https://810dce77-56ab-4324-823a-3549757f4eab.filesusr.com/ugd/1fad07_71f40f515a6a437aa15e32f94faf1ad9.pdf?index=trueIn 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_off0000e12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12B 5528 bytes
SHA-256: 0a969e91b32d92e7de92c75fee9d658066370bd4ef9b71bc2719a1dcd875cad9
font_01_sfnt_off0000f3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DA 10620 bytes
SHA-256: 3922e5a8ee5ab6af9c479086deaed452a09579b04afe94901557be3ad408fc2d