Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a79cdc8f5db943…

MALICIOUS

PDF

72.9 KB Created: 2021-02-20 04:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 51f3b7b9839b849869ae0b2b701fec24 SHA-1: 23cc1f98ada69d50660b851a57c6fdb3c637cb07 SHA-256: b5a79cdc8f5db9435b8a91dd52db8ff0256f986152f85053f6be4bea4bc12172
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://bologen.ru/wix?keyword=empanadas+colombianas+receta PDF link annotation
    • http://familyit.info/wikaxisugetisik419qj.pdfIn PDF document text
    • http://lenudes.com/do_lifters_help_with_deadliftse8k5p.pdfIn PDF document text
    • https://cdn.sqhk.co/sakixowofeg/Qqgheja/slackline_obstacle_course.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/gfcfFcQ/equalizer_pro_apk_android.pdfIn PDF document text
    • http://latuha.com/tatawupiwebofowibotamubu9vt5n.pdfIn PDF document text
    • https://zunepijubu.weebly.com/uploads/1/3/3/9/133986973/konajuwop-xaxabofutolu.pdfIn PDF document text
    • https://degulula.weebly.com/uploads/1/3/1/0/131070998/vewamet.pdfIn PDF document text
    • http://boxberry-24.cc/war_as_i_knew_it_patton7v3sj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444092/normal_5ffe4764ea69f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502248/normal_5fd377c133190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459935/normal_5fd3cf28970c3.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/ggcKsUj/nilanu.pdfIn PDF document text
    • http://mstmail.space/13597127861non6t.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/wazagidonux/communion_whitley_strieber_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/91970322977.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/dubibupebunabolagipuruti.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_off0000e028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE028 5316 bytes
SHA-256: e38ae95687fa82880603d562f20186d2a39e2494dcbf4e8f6aecc77739f2051f
font_01_sfnt_off0000f21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21F 10864 bytes
SHA-256: 3a8900a3d90c46be2f9eed796fead4d960ce18930fd40b7ef1bbcd1253f36669