Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd206d9740968ed…

MALICIOUS

PDF

71.6 KB Created: 2021-03-15 18:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 85e796fe225a5d097b4a0d40ebfe074e SHA-1: 0e8ee2a947a145fdbcfba73c8652a7ed9cb5cecf SHA-256: dbd206d9740968ed81238498547fb21509a559995b233a824ca0fe95bb6e5b5c
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, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains and potentially acting as a link farm for SEO manipulation or phishing. The presence of external URIs and the overall structure suggest an attempt to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=wicked+san+jose+discount PDF link annotation
    • http://naturka.space/548231310858cmfy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_6017def364724.pdfIn PDF document text
    • http://idealslim-italiaofficial.site/24418169125t1yek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458615/normal_5fe863966ed72.pdfIn PDF document text
    • http://feedbacrnz.space/7236995759493i2d.pdfIn PDF document text
    • http://edalovert.xyz/365169690903loun.pdfIn PDF document text
    • http://italiahot.space/biologia_y_geologia_3_eso_oxford_libro_digitaluz31l.pdfIn PDF document text
    • http://argo-tourism.com/black_diamond_wiz_headlamp_battery_replacementuuwt6.pdfIn PDF document text
    • http://aduo5.online/372238610863aou5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405895/normal_603ea8821f585.pdfIn PDF document text
    • http://znalomstvavip.site/what_is_effective_communication_in_the_workplace02cza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375341/normal_5fe8f591bc8b0.pdfIn PDF document text
    • http://duplicwcnj.space/87635452473m2xx3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_5fdc4da800391.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://88749095-6fd7-453f-8e8a-15b48fe47dd1.filesusr.com/ugd/e4d7df_d83a5d4477834ed4a30dc6b5591f847e.pdf?index=trueIn PDF document text
    • https://d8d691c7-cf48-432b-bece-a54604b57851.filesusr.com/ugd/1e3a4b_908d4092058d41f5bc912d82237bfb32.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/daselex/siwuzobumusirunufudok.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/zidesewosekav.pdfIn PDF document text
    • https://32e47638-7206-44c1-ad53-5c6f9176402e.filesusr.com/ugd/e00742_4e0d5463bbf8437eb3cc23ab10698449.pdf?index=trueIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_7134b47c865545b48479d0282a26b3fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/54022209250.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E3 4960 bytes
SHA-256: 940be970138e33213e9d48319539c160f7f9f335c70f5cc4539413f198679a98
font_01_sfnt_off0000e8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 11416 bytes
SHA-256: ec311eeb60f3e87be36a570c1f487248dee1ec31f2973a87bd55325563118096

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