Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6f0a756a35fee0…

MALICIOUS

PDF

82.2 KB Created: 2021-01-03 16:39:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5eb8af17617ac04603f82871e0a4f33c SHA-1: b263e0081222d518ead164bf42e2fcc70bb7273a SHA-256: fd6f0a756a35fee05ad13c6fab3d0cffe92479ece2753083bb72a507c8f976d0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://traffine.ru/123?utm_term=2012+baylor+baseball+schedule PDF link annotation
    • https://cdn.sqhk.co/fidapulano/heWvLgO/reredewaj.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/iQqOrid/bhop_pro_apk_1._9._4_download.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/niporofez/android_automotive_volvo_xc40.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a7a03f5-444c-481e-b1a9-0a5c577e2503/98963592817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/906770f0-57f3-4b7b-98ec-3ad30e6f11b0/cuidados_mediatos_e_inmediatos_del_r.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/fb_messenger_lite_for_java_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/vetifirofewezupuzuxusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea42f15-d622-4c98-9c59-1d691f41112f/32119370876.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/root_master_apk_english.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/caravan_palace_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/lakot.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/senipaxomonaserukowoke.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/utility_function_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/storyboard_template_ks2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3618a3ab-119d-424f-a9ef-ba05f07b8b7a/pltw_7.4_conclusion_question_answers.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00010bec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10BEC 25236 bytes
SHA-256: 4153057cf65184660e788b7da3e2846f7e18d133d2e1197738a1371b4bb1dc96
font_00_sfnt_off0000d63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63A 5500 bytes
SHA-256: a98f3cb1339d3c34145db6c42074d2418ac847c95e4b2f620a8f079a73044670
font_01_sfnt_off0000e8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E7 10160 bytes
SHA-256: 4c0dce05db62507bced889cab96793b0209c0ca846212bbddc2a6360de107475

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