Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b39704ad9c9612…

MALICIOUS

PDF

85.8 KB Created: 2021-02-20 12:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 44ab535d0cb93fd8c4dbabbbfc9c59ce SHA-1: 5d6aaef0e69197f59d5ec32d28d3c40fe2d60601 SHA-256: 14b39704ad9c96123a54ce1a3df67327af9758fc006455cb9987c8bb2df2d3d1
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://jottigo.ru/strik?utm_term=how+to+read+violin+notes+for+beginners+pdf PDF link annotation
    • http://sushibara.net/dorabudiwiletuzoxulubuzewsyyxx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403260/normal_5fcb01e19a04a.pdfIn PDF document text
    • http://tvoyoproc.fun/video_converter_apk_android_2._3mojyy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475571/normal_600f639b851d6.pdfIn PDF document text
    • http://amst-watch-v1.club/1974_vw_beetle_repair_manual_fretx43s.pdfIn PDF document text
    • http://termometr-medikal.site/lamawokububefajipugikowzsngt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368244/normal_6005277098a7b.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/aroma_8-cup_rice_cooker_and_food_steamer_manual1wkyz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_601535d9154de.pdfIn PDF document text
    • http://lovelid.xyz/nabudodawusaqp3cp.pdfIn PDF document text
    • http://zewojapu.22web.org/3392132322.pdfIn PDF document text
    • http://vakexuk.22web.org/bajirao_mastani_full_movie_hd_pagalworld.pdfIn PDF document text
    • http://mnclassis.org/watch_dogs_2_mod_apk_revdl8d94w.pdfIn PDF document text
    • http://svoylend.xyz/cms_ed_medicine_listdn5va.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/wizuluworafid/81580906334.pdfIn PDF document text
    • http://muzudamufuvase.rf.gd/telugu_bible_nighantuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/80477627133.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/basara_2_pcsx2.pdfIn PDF document text
    • http://texavit.epizy.com/piramide_nutricional_actual.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/heart_rate_variability_in_athletes.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/31370960062.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7C 5460 bytes
SHA-256: 7ab22b54d0d34576d630cfd1ef72bf5719dc18d62cfd1c275f6c19cf8638e1cb
font_01_sfnt_off00010f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F34 10848 bytes
SHA-256: d7d71e4ff902a15eb9275412d3013d104571d06ddd5a6eddf2bb259d0cf34b8c
font_02_sfnt_off0001340a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1340A 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd

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