Malicious PDF — malware analysis report

Static analysis result for SHA-256 5903ae27e565c2b1…

MALICIOUS

PDF

92.5 KB Created: 2021-01-27 10:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9c1e748c78fef029ed1d503dadd3b8bd SHA-1: 6c06f54c4c71b1f8c816a786067876175ea030c3 SHA-256: 5903ae27e565c2b1377b0724a1706afab4fab58a28ea896999967efe9c68cba7
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 link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/aws?utm_term=india+csr+reporting+survey PDF link annotation
    • https://cdn.sqhk.co/minamojazi/djchehi/kenepukipix.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/Ggjifha/gopewudilerif.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/dTjc4jb/86378148394.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/zshghgC/totoluxeputogun.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/cgdgcVV/kogazalutixog.pdfIn PDF document text
    • http://about-fb-support.com/808318986473y2vc.pdfIn PDF document text
    • http://ipatovaalena.ru/snes_classic_japan_game_listb505m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416149/normal_5ff0a72730e41.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/ZjeSMgc/nusibadogote.pdfIn PDF document text
    • http://mx50off.pro/house_party_2_movie_onlineyzqwc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422136/normal_5ff1f54a1eda5.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/cq4jehg/75887130661.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/AYijVgd/video_player_app_download_for_android_mobile.pdfIn PDF document text
    • http://vorecan.space/missangest_fantasy_dollmaker7l4rp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370555/normal_6010d593b13ff.pdfIn PDF document text
    • http://reduslim-shop.website/download_parkour_rush_pvp_mod_apk4zt5w.pdfIn PDF document text
    • http://podarokinsta365.site/25381914509nbiv3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/i_mx6_dual_lite_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/best_android_apps_for_productivity_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/65622999399.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/69733245880.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_off00012ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA4 5308 bytes
SHA-256: eca8d5d3842c006c7ae8783cb27345f454121810f1254ab2932e6fb9c7d57e60
font_01_sfnt_off00013dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCE 11436 bytes
SHA-256: 10f742cbc1aa7f325f696a5a1fa206b8042577e4b4430b8308cba83a716edb44

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