Malicious PDF — malware analysis report

Static analysis result for SHA-256 6915815fdd513b1a…

MALICIOUS

PDF

79.0 KB Created: 2021-03-24 18:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 706e914cdd261cf67655a8e3ea2386e4 SHA-1: 6b579671980b8c73005279428882f654d66bf4b8 SHA-256: 6915815fdd513b1a44f02b7f403bbea310bb3ce221ad99aacd2050941dd410bc
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs and embedded URLs. The document body, though heavily obfuscated, suggests a lure related to 'pharmacy sig codes app'. The primary malicious indicator is the external URI pointing to 'zajinet.ru', likely serving as a phishing or malware distribution site.

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://zajinet.ru/strik?utm_term=pharmacy+sig+codes+app PDF link annotation
    • http://bachanalytics.com/36542029436u6wci.pdfIn PDF document text
    • http://istra-backwater.ru/why_is_my_kenmore_refrigerator_not_coldau8ey.pdfIn PDF document text
    • http://autocredit.moscow/vet_tech_high_school_classes3i4k3.pdfIn PDF document text
    • http://sodahq.club/what_are_one_view_drawings_used_for63o0r.pdfIn PDF document text
    • http://hookup666.site/where_does_the_word_fear_originate_fromqrr99.pdfIn PDF document text
    • http://dimax-matrasy.ru/free_robux_no_verification_2020_october40f47.pdfIn PDF document text
    • http://hihikane.space/31891854935edk5u.pdfIn PDF document text
    • http://onsideball.info/5805570681668b0a.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/mozedijiz/gewufizubovimetelopun.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/gesaxup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ae1a01a-5946-4221-89a0-31819ff01581/how_to_plot_an_integral_in_mathematica.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/cetusplay_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/93227738533.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/wunuvevazekikuzon.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/5018149406.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30cc2b75-a268-487a-b611-89f022db7e8f/cunto_cloro_por_litro_de_agua_para_piscina.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/4061971825.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/98504237871.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8bb6ef2-f9fb-4455-8554-3b3c41ad875c/explain_how_a_covalent_bond_holds_two_atoms_together.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/titanium_appcelerator_tutorial_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/likedebivejotuga.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/rheem_furnace_error_code_66.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42F 5560 bytes
SHA-256: ebcc36eb869d62b734e3646dedac48e9cbc95f22f7d4fa64bf62d36d67427799
font_01_sfnt_off000106f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F5 11604 bytes
SHA-256: ca6386a3886d681e5bbe634bb233e0d1ed93a0ea01f5892865559eee6f2100bf

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