Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8a81b75222abd78…

MALICIOUS

PDF

157.0 KB Created: 2021-03-20 02:33:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15bddd5510c98434441b457741cd000d SHA-1: 5a0c3c3a5cdeb2528adbe56de35bbc629fb95c1f SHA-256: b8a81b75222abd786f810c8e2ee5476d6695183c69f8e85e4f4dfce22aa00b2a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest the document is designed to redirect users to malicious content, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://zajinet.ru/wix?keyword=marine+ecosystem+food+web+producers
    • https://cdn.sqhk.co/bizewavaxug/jhghwjc/savexa.pdf
    • https://cdn.sqhk.co/kekumumaxow/iUZkhfH/wufomagotef.pdf
    • https://cdn.sqhk.co/xukigipeduve/jfrgijd/51074640709.pdf
    • http://tijukilebag.getenjoyment.net/wordpress_admin_page_template.pdf
    • http://koponegigat.medianewsonline.com/weber_spirit_210_grill_parts_amazon.pdf
    • http://gopadaxin.mywebcommunity.org/56703175610.pdf
    • https://cdn.sqhk.co/xaselavub/hdgfCie/tesipovuro.pdf
    • http://mitimewigupito.mypressonline.com/tabedi.pdf
    • https://cdn.sqhk.co/levowexesu/58ibKBP/32120516510.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://2080fafa-2491-4ac3-8118-a138f33bff34.filesusr.com/ugd/822ecd_b8acf9cbbc904abeabfd7202aa98fc7c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fc1cc2f4-e881-4894-b724-c9d0e7b7b2b8/80731677581.pdf
    • https://uploads.strikinglycdn.com/files/5c7253a4-5c3e-48a2-ae38-fd10bf52096d/miwazotunerodumedaga.pdf
    • http://wevedikelu.epizy.com/gudasejalikinidomodu.pdf
    • https://uploads.strikinglycdn.com/files/b416a2b6-3d41-47cc-956a-980b0e7edbca/kulune.pdf
    • http://jeximojela.myartsonline.com/bank_guarantee_and_letter_of_credit.pdf
    • http://kitalanexu.epizy.com/spotify_er_apk_ios.pdf
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_6a5cc8063f044d5d9618fa81de2c60ca.pdf?index=true
    • https://s3.amazonaws.com/dugibabafod/what_is_interdependence_in_ecology.pdf
    • https://s3.amazonaws.com/pilazi/90878831947.pdf
    • http://nusemid.rf.gd/programming_visual_basic_.net.pdf
    • http://sufizewuwavibu.epizy.com/government_petition_template.pdf
    • https://s3.amazonaws.com/gezizefefififa/ahsan_ul_kalam.pdf
    • https://uploads.strikinglycdn.com/files/aec7d248-ccc7-4659-9246-7250e7ba22a8/how_to_install_verizon_fios_router_g1100.pdf
    • https://s3.amazonaws.com/gitipelut/40831769914.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000200e0.bin
83b1149c138e1229a94c8f894db986698859b58d5fe9574da277c5d66226e80c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x200E0 5492 bytes
font_01_sfnt_off00021382.bin
c5dc9bdcda09d3ef30c2d65984ce55f13d5cdbb67fd442547bec39c403a7014b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21382 15132 bytes
font_02_sfnt_off0002423b.bin
b5f1397982530d9e987604a9fc8467d56fd147c09520e12e54de27667870b356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2423B 16088 bytes
font_03_sfnt_off000256f9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256F9 4324 bytes

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