Malicious PDF — malware analysis report

Static analysis result for SHA-256 641e2b5ee7b3c840…

MALICIOUS

PDF

78.3 KB Created: 2021-03-20 08:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ac893b7789578d1820a7dff022aa2f SHA-1: 4cd6894fa78ba469313e15f16963d8d6398fc92d SHA-256: 641e2b5ee7b3c840f4686d3899a6ec3be9aae736c32afdec6bde1d6323d1b47f
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of a phishing or trojan delivery mechanism. The document contains language suggesting an invoice or payment lure, and embeds external URLs, one of which is https://seumenha.ru/strik?utm_term=what+kind+of+account+is+thrift+savings+plan. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a likely attempt to redirect the user to a malicious site for further exploitation or credential harvesting.

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/strik?utm_term=what+kind+of+account+is+thrift+savings+plan
    • https://lukafitujukeme.weebly.com/uploads/1/3/3/9/133997152/jozumapegego-ratadakutis.pdf
    • https://static.s123-cdn-static.com/uploads/4489980/normal_5fe1a9abe7e37.pdf
    • https://cdn-cms.f-static.net/uploads/4486742/normal_6011335ecdafb.pdf
    • https://cdn-cms.f-static.net/uploads/4368989/normal_6048457c655e6.pdf
    • http://zumasuxujole.22web.org/fejit.pdf
    • https://buwuwewofopalun.weebly.com/uploads/1/3/4/0/134097592/lusizip-luzoko-ruruvow.pdf
    • https://cdn-cms.f-static.net/uploads/4485005/normal_5fd17ff57c189.pdf
    • https://static.s123-cdn-static.com/uploads/4427538/normal_600812051948d.pdf
    • https://cdn-cms.f-static.net/uploads/4489993/normal_602c92aa5c5dc.pdf
    • https://cdn-cms.f-static.net/uploads/4493890/normal_5fdaf2cd8b0b6.pdf
    • https://jerolukemotib.weebly.com/uploads/1/3/0/8/130874115/f645f8.pdf
    • https://radunepik.weebly.com/uploads/1/3/4/6/134617153/jalusakov-ribaji.pdf
    • https://waxizeno.weebly.com/uploads/1/3/0/8/130814339/babatuf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/forupokisip/dukuferuvinam.pdf
    • http://jeworobe.rf.gd/cardiologia_pediatrica_gratis.pdf
    • https://s3.amazonaws.com/retobifulipo/sample_iq_test_questions_and_answers.pdf
    • http://riwexakax.epizy.com/usatestprep_answer_key_english_3.pdf
    • https://uploads.strikinglycdn.com/files/9b7f1646-1e25-4f45-a9bc-56d76761ae54/kokalopa.pdf
    • https://s3.amazonaws.com/julexekubaj/nutcracker_march_piano.pdf
    • https://s3.amazonaws.com/vinivuxo/livil.pdf
    • https://uploads.strikinglycdn.com/files/d5aff2cd-2252-49c3-babf-6e21f380cab9/niruzosoduzimatetonik.pdf
    • https://s3.amazonaws.com/tojabixefova/pafizusarukavubemopinawar.pdf
    • https://uploads.strikinglycdn.com/files/d22ac8a8-9b60-4388-98d5-7f9a8bacda47/the_twilight_saga_eclipse_part_3_full_movie_in_hindi_download_720p.pdf
    • http://jilutuve.rf.gd/against_interpretation_goodreads.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4c4.bin
29e4241ee9f4ae4fb05ee4f21dc70a966e715ab18f56647f1be08dc88e043c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5320 bytes
font_01_sfnt_off0000f6d9.bin
d29933dd5c32fc4ae0e092c1788077211933294297a3106e283319cf5ff58f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D9 10712 bytes
font_02_sfnt_off00011b80.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B80 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.