Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e14545a09e9354c…

MALICIOUS

PDF

80.1 KB Created: 2021-03-19 13:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1d911b17c8d317a0aa7e6bcd5a4202b0 SHA-1: 629dbbd38929ea7e66f54284a13e47f3ed1ddf22 SHA-256: 4e14545a09e9354c878bef80365d7f5a4231a7af3465b63ee3c3c324ad1a33bf
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with several pointing to disposable domains and exhibiting link farm characteristics, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/strik?utm_term=rocket+stove+diy+youtube PDF link annotation
    • http://menbp.online/aid_to_bible_understandingcqss4.pdfIn PDF document text
    • http://silorab.22web.org/smoothie_king_menu.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/nowowigewe.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/vepobewowojuril.pdfIn PDF document text
    • http://datingdate.site/moxutifuwulurm40sp.pdfIn PDF document text
    • https://gefelamanak.weebly.com/uploads/1/3/4/3/134353999/8112274.pdfIn PDF document text
    • http://mybiol.site/all_appropriate_preposition99h2k.pdfIn PDF document text
    • https://remenogabeta.weebly.com/uploads/1/3/4/0/134012297/2b6978.pdfIn PDF document text
    • http://makelemeg.mygamesonline.org/89205422449.pdfIn PDF document text
    • http://ecosbor.net/what_is_the_music_of_south_koreaq8j8o.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/tivatud-motufoworubefu.pdfIn PDF document text
    • http://lagujegivupani.22web.org/wemegonimomagiji.pdfIn PDF document text
    • http://ionatr.fun/kaxuwovukenpie5o.pdfIn PDF document text
    • http://redit.fun/how_to_pair_anker_bluetooth_keyboard_with_ipadtumxq.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/applied_psychology_in_human_resource_management_8th_edition.pdfIn PDF document text
    • http://wordsideget.top/constitution_day_worksheets_3rd_gradeglpo3.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
    • http://napipipazapuka.epizy.com/85136245229.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/toro_snow_blower_repair_manual.pdfIn PDF document text
    • http://xarezebabanadot.epizy.com/bungen_englisch_present_progressive.pdfIn PDF document text
    • http://gukukenuvewasot.rf.gd/tamilrockers_boss_baby_movie_in_tamil.pdfIn PDF document text
    • http://xifebudi.epizy.com/zupadewonufuduxir.pdfIn PDF document text
    • http://beranaja.epizy.com/20030711175.pdfIn PDF document text
    • http://maveropewavofu.rf.gd/belusikakefalibuwovadukuj.pdfIn PDF document text
    • http://tasoged.epizy.com/iodine_deficiency_disorder_programme.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_off0000ee1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1F 4744 bytes
SHA-256: fee4096f2de48bf9c536eceab7bafd2a992e6eeaeb417c42e42006ad231a0f0f
font_01_sfnt_off0000fe5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5A 11024 bytes
SHA-256: 8f0f6108bc57a89221c972359a5ad219976f9ad28f30e66a717f50c53c81798d
font_02_sfnt_off0001238b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1238B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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