Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ff739df9f59db3…

MALICIOUS

PDF

79.0 KB Created: 2021-04-08 01:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0f27b032a28ac4315c928db0f39e58ab SHA-1: 1750e993f97c4f575300d297d7a709c489309435 SHA-256: e4ff739df9f59db3b538c3736f187f33f11a9664f6d323a7b06da7b88f5d0017
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 0.9996

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://resalured.ru/strik?utm_term=how+to+draw+turkey+with+handprint PDF link annotation
    • http://lijijuzopos.iblogger.org/20436567536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_6066a1dcd3782.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464702/normal_5ff18f5172f2e.pdfIn PDF document text
    • https://cdn.sqhk.co/geruvijiwiw/bqrl7Nb/zombie_pirate_gunnery_mob_hand_cannons.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503035/normal_60462b06c0d8b.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/aGjfjj6/jupajipuji.pdfIn PDF document text
    • https://cdn.sqhk.co/bidusowo/jfjchZG/a_new_history_of_southeast_asia.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuniruf/ciggeLF/bouncy_bounce_bounce_ball_game_nokia.pdfIn PDF document text
    • http://kosadezisadin.22web.org/fivowetuwaji.pdfIn PDF document text
    • https://cdn.sqhk.co/tuforalogidu/jePgjHP/jakogigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484376/normal_6050020041f5b.pdfIn PDF document text
    • https://cdn.sqhk.co/podizapexiv/jTjcWgd/4g_recharge_plan_jio.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/lolaritemukole/36947386147.pdfIn PDF document text
    • http://watenuzigoxabi.rf.gd/neuropsychological_testing_boston_medical_center.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/britain_history.pdfIn PDF document text
    • http://tezajiduzut.epizy.com/baldrige_excellence_framework_2020.pdfIn PDF document text
    • http://dozonexupiwef.epizy.com/bisidelirevu.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/characteristics_of_effective_leader.pdfIn PDF document text
    • http://pujukejesoteja.epizy.com/35819765873.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/aladdin_full_movie_eng_sub.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/81385622093.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_off0000eb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB11 4936 bytes
SHA-256: 962c4b43a069c39d49eab02c39983dee74b1bff9a49d05267a2b0d5224b55612
font_01_sfnt_off0000fbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE1 10644 bytes
SHA-256: 743746163a2abc2c7e7ca963a00d61d46b3a9b671337c6442556248cad3caa74
font_02_sfnt_off00012056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12056 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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