Malicious PDF — malware analysis report

Static analysis result for SHA-256 44deeeb06dadc5e8…

MALICIOUS

PDF

76.5 KB Created: 2021-02-25 16:48:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d0dea644c3a8e189582e617065e90dae SHA-1: b778064904757a0df8ac6418621c9d33d2fde025 SHA-256: 44deeeb06dadc5e8e3ee31112468cdf83d0d7d586a38b6b55f2eff20aa9e09cb
116 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL, 'https://maypoin.ru/award?keyword=is+yeti+mic+good+for+singing', which is likely used to redirect the user to a phishing or malware-hosting site. The presence of a QR code lure heuristic further supports a phishing attempt. No scripts were extracted, but the overall structure and embedded URL point to a malicious intent.

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
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://maypoin.ru/award?keyword=is+yeti+mic+good+for+singing PDF link annotation
    • http://ryduslim.website/90349030169ii9s4.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/gjiicgh/asterix_and_friends_mod_apk_2._0._0.pdfIn PDF document text
    • http://ttttrrrr.space/basic_information_report_samplet0rbx.pdfIn PDF document text
    • http://docita.fun/star_wars_the_rise_of_skywalker_watch_online_free_camwaxxg.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/jggfYBq/qr_code_scanner_iphone_8.pdfIn PDF document text
    • http://nopisodozig.66ghz.com/camera_x_ray_android.pdfIn PDF document text
    • http://thelandofbadideas.com/dujafuzurovavalunutuesmm.pdfIn PDF document text
    • http://d2-club.ru/effects_of_social_media_to_students_in_the_philippines0lmw3.pdfIn PDF document text
    • http://all-system7.xyz/widomuzirebapugamivebuymh6r.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/dalava/cdc_guideline_central_line.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/i_will_rise_up_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/arithmetic_progression_mcq.pdfIn PDF document text
    • http://lodavudomajip.epizy.com/letter_writing_worksheets_for_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/zageleniginoxeto.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/bifugokakabaxosel.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/differential_amplifier_applications.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/bhakti_bhojpuri_video_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/sovovaridobuwixekogu.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_off0000f038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF038 5140 bytes
SHA-256: 579fc383875697f54ce651a2f00c7615049261ae926809b2c099b69739d5990a
font_01_sfnt_off000101ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AB 10184 bytes
SHA-256: 58f10ec8ed48c7aa7bae16ac48db14c6c5822ab1cfaecb0d3b856b2e3cb07a3d

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