Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf74b6a51f091f39…

MALICIOUS

PDF

76.4 KB Created: 2021-02-24 11:19:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6c830a4f9621be888b9ed39a397b63fb SHA-1: 3655944436904809e25159e89cf5408c2cb9a061 SHA-256: bf74b6a51f091f391f79baf21060fc7e09f3a54efa28c3aee19be6e8f343643e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=ariana+grande+poster+thank+u+next In PDF document text
    • http://health2health.online/24066689619y5qyj.pdfIn PDF document text
    • http://palorobumuwew.iblogger.org/koxegulebivak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427501/normal_5ffa716954676.pdfIn PDF document text
    • http://songkfrk.site/688108142474ysuw.pdfIn PDF document text
    • http://firstdoctor.xyz/87806192376dw4vu.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/dCvr8gi/54321771504.pdfIn PDF document text
    • http://fexevosekuzavep.iblogger.org/48410225892.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5fcd57f1c5d23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371258/normal_6000568e7db77.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/extreme_car_driving_simulator_2020_mod_apkr2x71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471995/normal_5fff6a7f2e6d3.pdfIn PDF document text
    • http://tumbochka.space/68388126072csg9n.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://jexiduro.rf.gd/al_quran_30_juz_full.pdfIn PDF document text
    • http://nokolul.epizy.com/map_of_benue_state.pdfIn PDF document text
    • http://lipidusixul.rf.gd/91297109591.pdfIn PDF document text
    • http://dekifovep.epizy.com/22224344982.pdfIn PDF document text
    • http://pokazirajig.rf.gd/dobutamo.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_off0000dfec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEC 5192 bytes
SHA-256: b932309314255ec972ac089a81edc76b0cbf04ed6362702edadb29bac8dd24be
font_01_sfnt_off0000f187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF187 10720 bytes
SHA-256: 8d2e95d514ea1cf716bd8c04e03fc3d2d241b48babc6d1f4f5b2ce7519eed1f1
font_02_sfnt_off00011645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11645 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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