Malicious PDF — malware analysis report

Static analysis result for SHA-256 442893f66bee3376…

MALICIOUS

PDF

76.6 KB Created: 2021-01-10 12:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 93210dbba98361809e33254c21745448 SHA-1: 4597b27ebc6dc48b97a20f7b63c3638d610d5f2b SHA-256: 442893f66bee33767544fceb963c0b074e2290ce83fe24e7695cb19fdd47d806
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafftec.ru/aws?utm_term=online+magazine+template+free PDF link annotation
    • https://site-1180442.mozfiles.com/files/1180442/46439895718.pdfIn PDF document text
    • https://site-1172874.mozfiles.com/files/1172874/new_notification_ringtone_download_mp3.pdfIn PDF document text
    • https://site-1174582.mozfiles.com/files/1174582/muropepunimenetemun.pdfIn PDF document text
    • https://site-1178650.mozfiles.com/files/1178650/46159660588.pdfIn PDF document text
    • https://site-1171526.mozfiles.com/files/1171526/witcher_3_fist_of_fury_velen_fishgulper.pdfIn PDF document text
    • https://site-1168300.mozfiles.com/files/1168300/download_game_idle_tap_strongman_mod_apk.pdfIn PDF document text
    • https://site-1178139.mozfiles.com/files/1178139/21205223465.pdfIn PDF document text
    • https://site-1180908.mozfiles.com/files/1180908/guided_reading_groups_on_zoom.pdfIn PDF document text
    • https://site-1178690.mozfiles.com/files/1178690/43911291366.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/jusuberu/icosahedron_template_snowman.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/31509955261.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/how_to_feed_as_a_vampire_lord.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/lewifajozudopokujapasa.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/runevupoloviwowuziro.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/7th_grade_math_algebra_1_worksheets.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_off0000f0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BF 5120 bytes
SHA-256: c94ca0302769fb74286561ad150ba9dd4a95507ace1539bd1a0a032c1ec4f206
font_01_sfnt_off0001021e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021E 10344 bytes
SHA-256: 186d2504c607e0f20c2fefdaba4b34f0255a04b93b79aa876712266507944b93

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