Malicious PDF — malware analysis report

Static analysis result for SHA-256 247422854956da06…

MALICIOUS

PDF

73.6 KB Created: 2021-03-21 21:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f84c4fc770225b5923770121d372a187 SHA-1: 2308e042fceea42beb19abf1356d3435c8b9fb1a SHA-256: 247422854956da06e45ecd8346254196d2c1e8c671ae6d0b97d0360fe50f2a88
166 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, several of which point to suspicious or disposable domains, and one is explicitly flagged as an invisible link lure. The document body, though heavily obfuscated, contains keywords suggesting a phishing or scam attempt related to online services.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://pelibifir.ru/strik?utm_term=cloud+dvr+xfinity+online PDF link annotation
    • http://glasshookahcatering.com/nike_air_force_1_white_and_black_womens_size_6ncxb8.pdfIn PDF document text
    • http://rameautbxy.space/buripovujesazijusae3vzq.pdfIn PDF document text
    • http://webmastervlad.ru/kikoxukosedaru4uv.pdfIn PDF document text
    • https://potepivogatofef.weebly.com/uploads/1/3/2/7/132740463/xupoxugibefikiz.pdfIn PDF document text
    • http://firstdoctor.xyz/define_hermetic_philosophyaqxkj.pdfIn PDF document text
    • https://jubaluwaruzazux.weebly.com/uploads/1/3/2/7/132740890/1da0c66600.pdfIn PDF document text
    • http://copyright-help-center.com/6189882937opixm.pdfIn PDF document text
    • https://gikudinok.weebly.com/uploads/1/3/4/7/134730402/bozonokerudoruv-papovigabugu-kefasijole.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/zinamonaded-rutewiga-nogima-ralugede.pdfIn PDF document text
    • http://fastpysystem.online/27632009598buqx0.pdfIn PDF document text
    • http://cheapkeys.site/kitchenaid_mixer_repair_center_near_me3zjt1.pdfIn PDF document text
    • http://tehnotop.site/english_aptitude_test_samplef7z7a.pdfIn PDF document text
    • https://puxetesotomu.weebly.com/uploads/1/3/0/7/130739839/xaxoledol_kotefinufenufo_fazexebobepob.pdfIn PDF document text
    • http://songkfrk.site/28587066044fir57.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/povamonifasuvekgndcx.pdfIn PDF document text
    • http://webdefilmizle.com/peter_pan_piano_sheet_musici2wf1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://varogofef.epizy.com/avengers_endgame_script_download.pdfIn PDF document text
    • http://pimifemegizak.epizy.com/biugo_video_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/46731101362.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/fallout_1_guide_reddit.pdfIn PDF document text
    • http://nesazovopiw.rf.gd/panelview_1000e_manual.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_off0000e5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D9 4648 bytes
SHA-256: fd0cb6e4d21fd0027cf40e5a6fa6ffd30e0f8725eeb4d67820d4416682fde1b3
font_01_sfnt_off0000f5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C2 10348 bytes
SHA-256: ce648880e8a7daee193530319665652e9f47331d0cde8b5643ed216509924ecc

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