Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86aac671f0404d5…

MALICIOUS

PDF

72.8 KB Created: 2021-02-23 12:29:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 82d967f5acb03862ef36ef54b19fb25d SHA-1: 49aa962f5c18f5e28818c86a3772a822cf71fcc9 SHA-256: b86aac671f0404d5c828b249da4a356ffc559f970b28c670cd7f577e0b31ab20
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/wix?keyword=download+real+instagram+followers+apk PDF link annotation
    • https://cdn.sqhk.co/vujixete/VggfjaC/monojokavaxilapaz.pdfIn PDF document text
    • http://complerbnp.com/the_perks_of_being_a_wallflower_movih8pfm.pdfIn PDF document text
    • https://norogogobizifuk.weebly.com/uploads/1/3/2/8/132816096/f08dbcea.pdfIn PDF document text
    • http://dirtygirl.fun/25954700111rh3be.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/3567744.pdfIn PDF document text
    • https://cdn.sqhk.co/wovovoteg/jgjOwgi/good_ringtones_for_iphone.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/3125598.pdfIn PDF document text
    • http://crawlmqyu.space/55292833346p5kpu.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/jbgfQig/pokeball_plus_pokemon_go_auto_spin.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/jygihhN/gif_to_video_converter_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/8jchdJx/57631126353.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/VdOtjbQ/no_limit_fitness_richmond_hill_ga.pdfIn PDF document text
    • https://jipepusubame.weebly.com/uploads/1/3/4/0/134040653/wojiregarigofok.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/eWJiamM/77162424990.pdfIn PDF document text
    • https://cdn.sqhk.co/nigalasiline/dibigBv/4633775836.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://voferinokubusob.rf.gd/am_or_pm_ka_full_form_bataye.pdfIn PDF document text
    • http://dekifovep.epizy.com/wekowuforoselubida.pdfIn PDF document text
    • http://voputujewijozej.rf.gd/ultrasound_guided_core_breast_biopsy_cpt_code.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_off0000dd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4B 5516 bytes
SHA-256: 5c20881d5283ec18a93817caefa0646f8842fceaa8c8e59b49f2aabf3d1dbe94
font_01_sfnt_off0000f015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF015 10960 bytes
SHA-256: 6032ab0c5da343083491b2f77732013a7ec379b6332b4bc0cde4de72cdf52334

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