Malicious PDF — malware analysis report

Static analysis result for SHA-256 f70de18727b5ef7b…

MALICIOUS

PDF

72.8 KB Created: 2021-03-02 06:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: b0d8cfc1814bad1e81457ae4759efc3f SHA-1: 7ddf127d9475739a3e1b77b3f896becc20bd227d SHA-256: f70de18727b5ef7bb063b3f549f9a1f2380d0c7a3e9abf3a808d798cf7bd5d53
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document body, though heavily obfuscated, contains references to pairing JBL speakers, a common lure for phishing or malware delivery. Multiple external URLs are embedded, with one directly linked to a 'strik' endpoint, suggesting a malicious redirection or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/strik?utm_term=how+to+pair+2+jbl+flip+5+speakers PDF link annotation
    • https://cdn.sqhk.co/nilesatu/ahfk0q8/tamil_cinema_box_office_king_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469630/normal_601f1d2f93146.pdfIn PDF document text
    • http://ezfix.asia/wisiforeecvhr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488604/normal_5fc571d88d8d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445864/normal_60234af5d4303.pdfIn PDF document text
    • https://tojaxufuvubugo.weebly.com/uploads/1/3/4/6/134641466/2039876.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/avg_free_antivirus_definition9xw9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459926/normal_6002014e004b7.pdfIn PDF document text
    • https://gopadafuwidu.weebly.com/uploads/1/3/0/7/130740623/bisufexizogi.pdfIn PDF document text
    • http://websecurer.tech/sobobupinivavotokoj9kb0.pdfIn PDF document text
    • https://cdn.sqhk.co/menidume/gzF0Bgb/nawomiliwafalesaz.pdfIn PDF document text
    • http://fixmarker.fun/74871510990cn5fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453730/normal_5fdffd9eb483b.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/JhajgaN/fobenexakerodat.pdfIn PDF document text
    • http://mylic.ru/49930683581wr6e1.pdfIn PDF document text
    • http://superheatbelt.xyz/music_terms_and_symbols_worksheetu0hcb.pdfIn PDF document text
    • https://nevozijefase.weebly.com/uploads/1/3/4/7/134748823/sobenedutaxopoxebo.pdfIn PDF document text
    • http://fabermanufacture.ru/piwiwigu7o0lx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000def3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF3 5484 bytes
SHA-256: cce498788ae8469b1415bf8e3006599ad10dd65d2bd9fc13f206fa65e4550853
font_01_sfnt_off0000f1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BE 10808 bytes
SHA-256: 92e2868759d11340a6b38a42926075b44cffc4553db76f66d1855d2746b30b36

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