Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45607266dbdfb4d…

MALICIOUS

PDF

108.3 KB Created: 2021-02-11 04:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 04aa0658bfbc8f6ba33e6382cbbe954b SHA-1: 5dd2eb8254aacb4631fb5866583d87f1cf49e4d9 SHA-256: d45607266dbdfb4d333ea18848cdee808ce0991eeee5770df1a5dda81ef76706
96 Risk Score

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-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://druttle.ru/123?utm_term=wilson+xp1+string+pattern PDF link annotation
    • https://cdn.sqhk.co/logubaxe/biaSUje/jugar_bowmasters_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/hjygeYX/4584522252.pdfIn PDF document text
    • http://kvyovk.xyz/89430512678btb93.pdfIn PDF document text
    • https://cdn.sqhk.co/waxipefimafa/tz7YhhD/57966232379.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/ejejegh/lutodezixoboxetutagoja.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/ghMhbSP/robzone_duoro_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/xoradofexul/hcijhjM/wsdot_ferry_wait_times_edmonds.pdfIn PDF document text
    • https://cdn.sqhk.co/dojatejij/MrP3jcQ/77153824461.pdfIn PDF document text
    • https://cdn.sqhk.co/rujamuzizogo/hj6hbdJ/word_race_cheat.pdfIn PDF document text
    • http://gakmancreatures.ru/word_search_puzzle_maker_freeq5v92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liluratomakawu.rf.gd/android_gps_battery_saving_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/lubricating_grease_guide.pdfIn PDF document text
    • http://dajidagetulawu.epizy.com/punjabi_remix_song_2018_mr_punjab.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/avast_premier_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/solving_trigonometric_equations_worksheet_with_answers.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/video_er_for_instagram_install.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/bevilejovumuzukuwij.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_005_off00017300.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x17300 26412 bytes
SHA-256: 20ddcc9ad82917ca4c908cde5bbcc8c00c3a1fe0556f0cd00bcbcbde135f6027
font_00_sfnt_off00013d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D41 5120 bytes
SHA-256: 30631413ef9ae0128f245f06abd39c26570d2c49f613d57b4d7da39b8af2fc95
font_01_sfnt_off00014ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ED6 10460 bytes
SHA-256: 0d68ca5f735838a2bbae3406426be05ca478e4967fd605af69acfb0a1b3b9722

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