Malicious PDF — malware analysis report

Static analysis result for SHA-256 4214d2a0fc2017f1…

MALICIOUS

PDF

78.8 KB Created: 2021-03-08 11:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8b9fafea7bfdbc06c15b4dffc64d445b SHA-1: c90169eed9352b55880daae625c629c51290c6b1 SHA-256: 4214d2a0fc2017f1adc9a16eabdee05f2561b7502c2026a857b4297f46020871
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that, when clicked, leads to a domain associated with malicious activity. The document body, though heavily obfuscated, suggests a lure related to an 'English speaking course'.

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/award?keyword=english+speaking+course+pdf+in+marathi PDF link annotation
    • https://cdn.sqhk.co/bubesuzax/ghigTgg/68000777418.pdfIn PDF document text
    • http://dirtygirl.fun/how_to_remove_trouble_light_on_dsc_alarm8f08j.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/X8gyhjK/73267125478.pdfIn PDF document text
    • http://hookup668.site/ancient_of_days_gospel_song0sn2r.pdfIn PDF document text
    • http://xozonline.ru/pubg_report_update6aw7c.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuroli/jegsK2P/61967376603.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xomepixo/asrb_admit_card_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/retebutivuper.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/dapedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4bbe8cf-c740-4d0a-9fbb-2f8f6ecf3ca0/best_drum_beat_for_hip_hop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ba2e3a-e9c1-4f16-849b-7b18087e985b/our_god_chords_key_of_b.pdfIn PDF document text
    • http://varewokumozikon.rf.gd/sap_basis_book.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/dwayne_haskins_nfl_scouting_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/kifafukuxar.pdfIn PDF document text
    • http://mepogevotu.epizy.com/58037148961.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA47 5472 bytes
SHA-256: eb7120a7b340e6173d69f13fc9a4c1423abfaca855b9cf693d6b373f77976148
font_01_sfnt_off0000fcac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAC 10240 bytes
SHA-256: 7b9a7315a44cdc71b4ce814e77d79354a753cb6282c369765c1827e6db4ea562
font_02_sfnt_off00011fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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