Malicious PDF — malware analysis report

Static analysis result for SHA-256 d235cc731f1d5e12…

MALICIOUS

PDF

89.0 KB Created: 2021-03-16 15:14:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: db97efec0b5b487160ba84ee521ff5e6 SHA-1: 527620da9ca9ae532f018dc4afd5015cae78b0f9 SHA-256: d235cc731f1d5e120c86cf04295685ad66c11a0fdb5734846bc6dc518fc5692d
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 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/wix?keyword=word+problems+with+scientific+notation+worksheet PDF link annotation
    • https://cdn.sqhk.co/rizijuwet/jbm8ghg/configure_meaning_synonym.pdfIn PDF document text
    • https://cdn.sqhk.co/nanagajog/16hdjcf/ratification_and_the_bill_of_rights_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/libobivole/sia9jfI/pedetaredogaloxaru.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/idgjm1k/60813347931.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/bha4Uhg/happy_wheels_online_unblocked_games.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/rPdhcQq/wallpaper_iphone_11_ios_14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_601fa8ae4941f.pdfIn PDF document text
    • https://cdn.sqhk.co/zapakolozu/ihcyGLk/23560077194.pdfIn PDF document text
    • https://cdn.sqhk.co/xidafigutoxa/A60hbgh/pepe_s_capture_the_flag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375507/normal_5ffeb4b047b77.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/1XSihia/48857664835.pdfIn PDF document text
    • https://cdn.sqhk.co/madilaxetevo/hjjcFjc/61724947354.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459477/normal_5fefd3e899695.pdfIn PDF document text
    • https://cdn.sqhk.co/zibomevuguli/NtZQiig/josona.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/fcgfecN/weather_today_boston_hourly.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496592/normal_6023f4b45baf6.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/fizaxo/ragnarok_m_eternal_love_rune_knight_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/55120960345.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/learn._javascript._ru.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/katun_bangla_2018_video_mp4lof.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/xugajul.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/tasenomu.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/22661625688.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/word_search_answers_puzzle_154.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/how_to_get_pass_marks_in_physics_class_12.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/57066179332.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_off00011a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A74 5704 bytes
SHA-256: 001480800e07f296efcc27b938c4e4487dbc51cca0f263ab8ae17b67505f8624
font_01_sfnt_off00012dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DCC 12028 bytes
SHA-256: c52edc46207adb5216cfbe37c89c65ecad06b98a7134e2b9e0c78d60f0cc7828

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