Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4eb20705a351584…

MALICIOUS

PDF

67.9 KB Created: 2021-01-27 03:47:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b4be266567314f4040a41ceb8028324b SHA-1: 9ecab1490227f27192bae1d4ab63dd3884e7c946 SHA-256: e4eb20705a3515847657ee70ebefd2101df12d8a633d1863c95b2e28de998c86
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO link farms or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically as a phishing or trojan delivery mechanism. The embedded URL `https://seumenha.ru/123?utm_term=oneplus+7t+headphone+jack` suggests a lure related to tech products, likely leading to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://seumenha.ru/123?utm_term=oneplus+7t+headphone+jack PDF link annotation
    • https://wurilulisewanid.weebly.com/uploads/1/3/4/7/134728532/nebobibazokeka_tipadeto_zozarivij_xevuvatobasat.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/aiH7Zid/shark_dash_download_ios.pdfIn PDF document text
    • https://lokuzovitopoz.weebly.com/uploads/1/3/4/8/134871506/nulekujijado_tabasaweget.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/PWmGiiG/bsnl_recharge_net_banking.pdfIn PDF document text
    • https://cdn.sqhk.co/kisilusotuke/0dcjbia/vadilibug.pdfIn PDF document text
    • https://didunoduwogu.weebly.com/uploads/1/3/2/6/132682107/fisijovesi.pdfIn PDF document text
    • https://jetabasujupeg.weebly.com/uploads/1/3/4/7/134703241/tuvijaduzufoxubisizi.pdfIn PDF document text
    • https://lezojefob.weebly.com/uploads/1/3/5/3/135319065/pijopizemokilen-sajeke-kejilojiluki-sudonifa.pdfIn PDF document text
    • https://toxofeleziwogiz.weebly.com/uploads/1/3/1/4/131406173/8709878.pdfIn PDF document text
    • https://pizewenijanud.weebly.com/uploads/1/3/0/7/130775868/7b6b2bab3.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/eNlxIj2/851463153.pdfIn PDF document text
    • https://nilozirarita.weebly.com/uploads/1/3/4/4/134463528/b634fcd61.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/kegubinefuda/30813013452.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/sovitibizawabimemob.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/google_sheets_file_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/bread_machine_cookbook.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/beachbody_performance_line_energize_ingredients.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_off0000cb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3F 5312 bytes
SHA-256: ccfc478edff436d6abcead6afb664660d1564940237bab77e3d51e4f1aacbbb7
font_01_sfnt_off0000dd56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD56 11228 bytes
SHA-256: a019f86dc0110b091a39cefcd2e36c7a4385ec5be5db2241800b84086d732bcf

Open this report in the interactive analyzer, or submit your own file for analysis.