Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11c2d34a6ab8c86…

MALICIOUS

PDF

71.0 KB Created: 2021-02-23 17:06:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4ec566240a834bec17bf2f09da57dcb8 SHA-1: 1247fea09c230978bd0976f4f2abccc75a594cf1 SHA-256: f11c2d34a6ab8c861fcbcc0bacc948ccb3e2fa7f58ead3ebd2a91ed481b71e87
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URL that directs users to a site related to cryptocurrency trading, likely a phishing lure. No scripts were extracted, but the presence of an external URI suggests 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://maypoin.ru/123?utm_term=how+to+trade+coinbase+ipo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465392/normal_5fde6eaf07caf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374371/normal_5fe3e7a98a1f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467564/normal_601580f06fc8c.pdfIn PDF document text
    • http://fanexaxujuto.22web.org/87551083180.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/nuselufuzo/photoshop_cs5_crack_download_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/45787876716.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/backgammon_free_for_windows_8.pdfIn PDF document text
    • http://zezinoretebeper.rf.gd/cafe_del_mar_chillout_mix_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/gummy_bear_song_dance.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/lagu_gratis_di_iphone_tanpa_jailbreak.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/xobonemalapebakupavunel.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/add_icon_in_button_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/narasimha_naidu_audio_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/spiderman_live_wallpaper_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/the_bluest_eye_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/band_of_brothers_series_full.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/astro_palmistry.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/hawaiian_airlines_flight_attendant_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/86334084527.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/wireless_backup_camera_system_for_android.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_off0000d784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD784 5228 bytes
SHA-256: 6fc9ff5fb378af645a72b3dd57f250d6f45ff328ac0cf3ffbdab2fdec8c91697
font_01_sfnt_off0000e965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE965 11012 bytes
SHA-256: 78a0ccf83956a0370f248bb2b84e4156b7263b1925355df5c97be8868680e3df

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