Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3062246c92a6eba…

MALICIOUS

PDF

72.1 KB Created: 2021-03-12 12:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63a69363dfcd2fdafd2df4f7f84c7eac SHA-1: 7ce6900e5449349d0031c818a695defb243ca029 SHA-256: b3062246c92a6eba9a83f499894e62bbdd35f3b48984b4f4934ca9adc1108042
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://ponafet.ru/123?utm_term=cigarette+smoking+pic', which is likely part of a phishing or malware distribution scheme. The presence of multiple unknown reputation URLs further supports this assessment. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=cigarette+smoking+pic
    • http://hurleyshamburgers.com/murodiramibamuwariebwy1.pdf
    • http://twitter-center.com/aaron_furniture_rental_storer6zo3.pdf
    • https://cdn.sqhk.co/tememukafosu/XSi9Pvz/fantasy_football_name_generator_human.pdf
    • https://cdn.sqhk.co/gubujurit/xggigjO/hobbyking_6ch_rc_flight_simulator_controller.pdf
    • http://g2am2e.xyz/3319819544665cch.pdf
    • http://voicebftyi.com/9854402346x03f3.pdf
    • http://appless.space/tai_chi_programs_onlinegkdxe.pdf
    • https://cdn.sqhk.co/mexovaru/djeTjhw/87280186535.pdf
    • http://fuxezaboxekave.scienceontheweb.net/apple_books_free_book_code.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/81f847c6-a91f-4fed-8145-2d8ccf711613/is_the_boy_who_harnessed_the_wind_on_netflix.pdf
    • https://s3.amazonaws.com/wizedumi/67253130140.pdf
    • https://uploads.strikinglycdn.com/files/8dce3cf1-4868-45d1-8bd0-4a843602c1b8/the_right_way_to_tie_a_robe.pdf
    • https://s3.amazonaws.com/dewazewokib/asrb_steno_admit_card_2017.pdf
    • http://ritumogadoj.onlinewebshop.net/guzineradiw.pdf
    • https://uploads.strikinglycdn.com/files/3660cedd-09b6-4113-8873-22b7ed2c42dd/33735421346.pdf
    • https://s3.amazonaws.com/temujonuwu/what_does_f-x_mean.pdf
    • https://s3.amazonaws.com/jeduzizonox/wwe_network_android_app_issues.pdf
    • https://uploads.strikinglycdn.com/files/6109d745-6e6d-4259-bfec-fade96491508/10009355156.pdf
    • https://uploads.strikinglycdn.com/files/9196e891-c4b8-4900-9b98-d3fed2919a8c/xelibenaz.pdf
    • http://gujimosodaza.myartsonline.com/sri_venkateswara_govinda_namalu_in_telugu_mp3_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dce4.bin
174d04ba853a072911d04c024d83fbf202f8e4732113caa64ac0e24930fe4fbc
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE4 5188 bytes
font_01_sfnt_off0000ee7d.bin
1bdf0911d97d7c102a1a269c60de17aa1a1691ae39d31897c44865708690bb42
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7D 10848 bytes