Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc6b0d47160c0a3…

MALICIOUS

PDF

79.3 KB Created: 2021-03-23 04:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47dcec364c84057774d5fedd958531b3 SHA-1: 2b0e8fd15be16ad66cc9290c4a73998618c4ba9d SHA-256: 0bc6b0d47160c0a323c4b38c2d2f6831a7389d71c9eb40786fc34f69fc0819da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The primary attack pattern involves embedding a large number of external links, likely to direct users to malicious websites for phishing or malware delivery. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/123?utm_term=heard+em+say+sheet+music
    • https://poxolegap.weebly.com/uploads/1/3/1/0/131069824/6506084.pdf
    • https://cdn.sqhk.co/kakolutezegu/jcichfJ/birkdale_school_sheffield_sixth_form.pdf
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/7645922.pdf
    • https://wewodagib.weebly.com/uploads/1/3/4/2/134266566/pudibenalugu.pdf
    • https://cdn.sqhk.co/libobivole/aIthcig/30661956102.pdf
    • https://cdn.sqhk.co/naxemikomeb/dSahgha/50244793821.pdf
    • https://vavaxurose.weebly.com/uploads/1/3/0/7/130775274/nofateralux_wupav_nibumogis_noxixolitep.pdf
    • https://kikuwigew.weebly.com/uploads/1/3/1/4/131407235/7022109.pdf
    • https://cdn.sqhk.co/diratukuz/jbia0hf/favufokuzawejolebusu.pdf
    • https://ruxibero.weebly.com/uploads/1/3/4/4/134403554/soxiduboredan.pdf
    • https://cdn.sqhk.co/kujusiru/IARheii/53660218895.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a5c4abb4-4a30-43a6-ab92-0fc37d89bead/napanomuka.pdf
    • https://s3.amazonaws.com/gurafoga/smoothie_recipes_for_weight_loss_philippines.pdf
    • https://s3.amazonaws.com/tetenifeme/39524781250.pdf
    • https://s3.amazonaws.com/fifuto/7367715812.pdf
    • https://s3.amazonaws.com/zopenave/calendario_mensual_2019_para_imprimir_gratis.pdf
    • https://uploads.strikinglycdn.com/files/910f3abc-761a-4d45-8c08-fa30ebbc948f/pobotagozifurarufizo.pdf
    • https://s3.amazonaws.com/litunux/momuwerow.pdf
    • https://s3.amazonaws.com/jijari/acc_aha_guidelines_non-_st_elevation_mi.pdf
    • https://s3.amazonaws.com/donarepemi/salvaguardar_definicion_informatica.pdf
    • https://s3.amazonaws.com/kotodur/vagunamadap.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_off0000ec3f.bin
132a056bad983b15890f3197b5fa3c5ae8178741ba9a130fe60a3a1c0d0ccc10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3F 4876 bytes
font_01_sfnt_off0000fcd1.bin
3c90092c06d15d8f9cdb6defb6be90c6215057ed1d2951b53de17b3d7f74aab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD1 10704 bytes
font_02_sfnt_off00012175.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12175 4324 bytes

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