Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6bdc6e94025d58…

MALICIOUS

PDF

79.3 KB Created: 2021-04-20 00:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c47b4aea42547d3487ae44f3f3e1241e SHA-1: aca445de963e35e31195308428bc1d9d6f50ba49 SHA-256: 1e6bdc6e94025d582922a44961d363cab9bba4db12fc0577cdca58c9b0895c2e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains a large number of embedded URLs, many of which point to disposable or unknown hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and contains metadata related to PDF generation tools, but the primary malicious activity appears to be the redirection to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=uniden+dect+6.0+phone+call+blocking
    • http://jokojujut.medianewsonline.com/29993994069.pdf
    • http://salleapp.xyz/2021_toyota_camry_xse_red_interior_pricec9l1a.pdf
    • http://reduslim-europa.site/mexeliluteglmmvd.pdf
    • http://pinerapidsrr.com/impact_of_globalization_on_indian_economy77csg.pdf
    • http://kpupnov.pro/wegodosanufoxanaxivedutaiemmj.pdf
    • http://appeal-ig.com/647325664413ft7c.pdf
    • http://megarafulosibef.22web.org/naretogovedas.pdf
    • http://losqutoq.online/best_3d_house_design_app_for_ipadgxhcj.pdf
    • http://lixusopo.mywebcommunity.org/91598811093.pdf
    • http://lighterusb24.site/baby_yoda_memes_funnyg33sw.pdf
    • http://lebojabufi.medianewsonline.com/zuwikuwopimumojeg.pdf
    • http://idealicaufficiale.website/7_principles_of_making_marriage_workxd1jh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bogeguva/kexekazif.pdf
    • http://sutejapikomi.epizy.com/jegabasidi.pdf
    • http://gebopotaxe.rf.gd/flipmart_responsive_ecommerce_html_template.pdf
    • http://nujilexulajuwup.atwebpages.com/mandalas_para_colorear_adultos.pdf
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_c412dbdb2c9d4df3b51e1e149c6eb0eb.pdf?index=true
    • https://171e2b11-24ea-4535-acac-f971ec821c4b.filesusr.com/ugd/a07927_a5d6f2096424447292ef3b6efd9197d8.pdf?index=true
    • https://s3.amazonaws.com/gezizefefififa/brandt_commission_report_1983.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_off0000eaf1.bin
59e43b9c890c0a78c51b2eab4800e364051fa1535c3650a39f16f23e0ec7dd96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF1 5372 bytes
font_01_sfnt_off0000fd28.bin
6dfeb04721e1fbeae40e97bc5d54d3a199cacc9ae601c355c5b6619508f49c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD28 10688 bytes
font_02_sfnt_off00012183.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12183 4324 bytes

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