Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d5f0477e5352f0…

MALICIOUS

PDF

78.2 KB Created: 2021-04-03 15:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b6743e5e724c354dfc937fe7751a25e2 SHA-1: cc0eaf1af9ac07507ddc980a1c4dafbd2df1b298 SHA-256: 72d5f0477e5352f0e992a479b51009f1c81c987badcdd2ace16d006960c4d673
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to an 'Epson ex5220 projector review' and embeds a URL pointing to 'nipisod.ru'. This URL is flagged as a high-risk redirector associated with phishing, suggesting the document's purpose is to trick users into visiting a malicious site. ClamAV detection further confirms its malicious nature, identifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://nipisod.ru/strik?utm_term=epson+ex5220+projector+review PDF link annotation
    • http://uggi-ugg.com/24540490456wepc.pdfIn PDF document text
    • http://fafabil.getenjoyment.net/calendario_2020_mexico_oficial.pdfIn PDF document text
    • http://rogijowop.sportsontheweb.net/xopodigaxijonoxu.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/artificial_intelligence_with_python_book.pdfIn PDF document text
    • http://katermore.ru/atsg_automatic_transmission_repair_mrywte.pdfIn PDF document text
    • http://lesantyqas.online/inspired_education_inc_answers705sh.pdfIn PDF document text
    • http://novubelugalij.medianewsonline.com/affect_vs_effect_quiz.pdfIn PDF document text
    • http://medyayazilimtr.com/tess_ve_q_dnm_indirqgyjb.pdfIn PDF document text
    • http://itdiscount.info/pursuit_of_holiness_study_guidemo5m5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kodasakame.rf.gd/monikulufemuwes.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/south_ka_picture_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb663ed1-0f3f-4072-8329-58aeac801498/67781730500.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/kelawefoponozata.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/community_ecology_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/smart-kids_english_grade_1_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/wixarizofutag.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/xedovepun.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/gattu_battu_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b6b5960-cecd-426e-a64f-af79d5184367/john_rawls_theory_of_justice_in_hindi.pdfIn PDF document text
    • http://wapofele.epizy.com/datafedilaponip.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/80390769409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0142782c-c3d9-4fc0-8696-e06cd7049f99/toro_724_snowthrower_manual.pdfIn PDF document text
    • http://tafogekodunegi.epizy.com/80915263611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb4a1c0d-a1b9-4ad0-a18e-cbdb876b681c/how_to_breathe_while_running_nose_or_mouth.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/billboard_top_100_songs_2018_free.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/94923838945.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_off0000f08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08A 5336 bytes
SHA-256: cd97bb16aa9ed334d949e7eed738cf7814983389734ea126d9c25b26dc328bd9
font_01_sfnt_off000102ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EC 12224 bytes
SHA-256: 6da29fddd406e13272c6311f740e97043f5b9cfe4ad1a8580a066254f60cbe51

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