Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccf177524ceb2a0…

MALICIOUS

PDF

77.9 KB Created: 2021-04-08 12:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 62888d080b2b476b2550458ad60ec5dd SHA-1: 73a3da2262d64c4dc98f06ed432dfbc1d7087df1 SHA-256: 0ccf177524ceb2a02706ad63371be4e59eb45afa186d51d8d9ffd6f0ba1b16e7
134 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document contains numerous external links, many hosted on disposable domains, and includes language indicating urgency, such as 'account will be terminated' and 'action required within 24 hours'. The presence of these elements strongly suggests a phishing attempt designed to trick the user into clicking a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://pelibifir.ru/strik?utm_term=can+siblings+use+cord+blood PDF link annotation
    • https://cdn.sqhk.co/bamebuxi/AjiOA0k/fulorumujotitopit.pdfIn PDF document text
    • https://wigizidipi.weebly.com/uploads/1/3/5/9/135984633/7686698.pdfIn PDF document text
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/lujodurefigale_dirulukijipif.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/zgf1gyj/descargar_sword_of_chaos_para_pc.pdfIn PDF document text
    • https://negopipeminote.weebly.com/uploads/1/3/4/8/134885603/xezirafirabe-genigufegub.pdfIn PDF document text
    • http://zujakupuk.22web.org/pinapawupufojeko.pdfIn PDF document text
    • http://tepedafezubilov.iblogger.org/54015496384.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/mewopegawam_suxifarojimu_tusawubenola.pdfIn PDF document text
    • https://kupubasurunasoz.weebly.com/uploads/1/3/4/6/134695217/8e6619eae8c0b.pdfIn PDF document text
    • https://cdn.sqhk.co/tajaketo/ge7Ohgf/sleeve_hitch_scraper_blade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://modurogodolu.epizy.com/69376941672.pdfIn PDF document text
    • http://tatevujes.epizy.com/what_do_you_need_to_become_a_secret_agent.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/the_cradle_the_cross_and_the_crown_an_introduction_to_the_new_testament.pdfIn PDF document text
    • http://xewixevagike.epizy.com/5859235864.pdfIn PDF document text
    • http://tazododamir.rf.gd/faa_airframe_textbook.pdfIn PDF document text
    • http://xidixisugatifes.epizy.com/canserbero_biografia.pdfIn PDF document text
    • http://tuguwobafadurot.rf.gd/nejiku.pdfIn PDF document text
    • http://bususetut.epizy.com/what_is_appreciation_of_music.pdfIn PDF document text
    • http://sabepusejoponi.epizy.com/mahalaxmi_kannada_calendar_2020_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/haunted_house_game_for_android.pdfIn PDF document text
    • http://mudafumiziw.rf.gd/pdf_splitter_page_wise.pdfIn PDF document text
    • http://zabobenalug.rf.gd/21562011846.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_off0000f3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B5 5152 bytes
SHA-256: 99ae4c65ca05a72a9bea8f4b980b496b0d05a2009710178ae276116530362dfc
font_01_sfnt_off00010542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10542 10852 bytes
SHA-256: 3b9f99e4a8a966d07ce48caf5f00febad5fc056657eeb90a87333cd4562fb502

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