Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b760fb633bfe7c2…

MALICIOUS

PDF

80.2 KB Created: 2021-09-12 19:35:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d3cbe856d08bf1636a20403f71478e83 SHA-1: 29ae2430ddb1af876c342a0fda96f846af815997 SHA-256: 2b760fb633bfe7c2862dc781ca8d1bc519490e40403e108e2952e75b99dea2a1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to potentially malicious domains, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are indicative of a phishing lure, likely attempting to redirect users to compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://altaamir.ipixpms.com/Rapport/public/assets/ckfinder/userfiles/files/likimek.pdf In PDF document text
    • http://nemalipics.com/87504791807.pdfIn PDF document text
    • http://delve-cr.com/uploads/69048327658.pdfIn PDF document text
    • https://sharks-cz.cz/images/file/jadevakibapox.pdfIn PDF document text
    • http://upoart.com/ckfinder/userfiles/files/sanopa.pdfIn PDF document text
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/muripugabizixizowek.pdfIn PDF document text
    • http://pamatudarbai.lt/ckfinder/userfiles/files/55510642355.pdfIn PDF document text
    • http://quesnelbusinessnetwork.ca/userfiles/file/69195250667.pdfIn PDF document text
    • http://sun-green.eu/ckfinder/userfiles/files/1698277489.pdfIn PDF document text
    • http://vaithun.net/upload/files/48091849753.pdfIn PDF document text
    • https://yuktogel.com/contents/files/52359870101.pdfIn PDF document text
    • https://mujeresenmovimientoplus.com/userfiles/file/56443262895.pdfIn PDF document text
    • https://rtquery.reitoken.org/Coaching123/images/files/zomolesoko.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/migokesixawelosijijilulov.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/161325bfa88f11---gadikomivazixuxakuz.pdfIn PDF document text
    • http://vitacanes.com/uploads/files/zikefizajirobakuvu.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/58069656373.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/nasatel.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/855390652.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/wumukikigab.pdfIn PDF document text
    • https://vayamcs.com/content_files/files/42047897261.pdfIn PDF document text
    • http://abarappresentanze.it/userfiles/files/42081885993.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=strategic+cost+management+hansen+and+mowen+pdfPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD251 18204 bytes
SHA-256: 16daf9d1c4cbdf2b797351f8bc2207c8440ff2b382cca93dcbe2c6dd26138137
font_01_sfnt_off00010186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10186 11180 bytes
SHA-256: 8cc514908b7948f7a77728c4949e0a5cf676917749f831629e0e246902712327
font_02_sfnt_off00011b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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