Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87c380fdf6d98c8…

MALICIOUS

PDF

50.6 KB Created: 2021-02-18 01:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8c5adf971730045f8d33ecd2dc3f1f85 SHA-1: d19be53418688af538c2734de89238119cd601dc SHA-256: a87c380fdf6d98c8cc24eabab920eb891c9b10ba0d3f519900cb0e924607014e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and embedded URLs pointing to potentially malicious domains, suggesting it functions as a lure or dropper. The PDF structure and embedded links indicate it's designed to redirect users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

Heuristics 4

  • 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
  • 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://seumenha.ru/strik?utm_term=how+to+arrange+colours PDF link annotation
    • http://repochka.site/vehicle_registration_card_abu_dhabix05vo.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/windows_10_pro_free_download_64_bit_with_crackvxj3x.pdfIn PDF document text
    • http://reduslimer.website/181601434852jh4u.pdfIn PDF document text
    • https://xibigulekin.weebly.com/uploads/1/3/0/9/130968960/mikuvenigajafozub.pdfIn PDF document text
    • http://detonic-italy.website/definition_af_videnskabsteorimxgh2.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/hhjdRgg/fortnite_girl_soccer_skins_names.pdfIn PDF document text
    • https://cdn.sqhk.co/kixikeli/ugciaji/87979747877.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/Mhngdji/resozo.pdfIn PDF document text
    • https://maritomumotoko.weebly.com/uploads/1/3/4/5/134512683/rulemafijo-fomizigi.pdfIn PDF document text
    • http://zesamoa.online/322045715485mc6z.pdfIn PDF document text
    • http://masterpowerpoint.com/pearson_education_4th_grade_math_workbookpzspr.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/jjCjd4y/guess_the_malayalam_movie_names_whatsapp_answers.pdfIn PDF document text
    • http://iminn.ru/mesesepomerimilalabizaxukpw7ks.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/madetipoxefifokizuxupugi.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/practice_act_reading_test_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/jixuxifozaxuxitobosimenam.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/xapetunavisi.pdfIn PDF document text

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