Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ede5846a6f3ec64…

MALICIOUS

PDF

77.1 KB Created: 2021-02-20 03:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 42478f8ae73f3e0053f00d4d9c987d2b SHA-1: f02604ae417a47642381003c0ac077ac1d6b588a SHA-256: 1ede5846a6f3ec640a776d7d3691663b641a9bf87691464ccf32fba451f77f04
134 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many pointing to disposable hosting, and a heuristic indicates a visual download button lure. The embedded URLs suggest an attempt to redirect users to malicious content, likely for downloading further payloads or phishing for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=8+ball+pool+hack+without+verification PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479222/normal_5fe0576f6dd11.pdfIn PDF document text
    • http://manipiso.iblogger.org/apc_smart_ups_2200_battery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461516/normal_600b4b863c554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_60186b73bd0dd.pdfIn PDF document text
    • http://mozodulo.iblogger.org/barcode_tutorial_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451019/normal_5fd5f4dd4b58a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402520/normal_60301fb7e77e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488133/normal_600dd2f6a63ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485172/normal_600c9a95d894a.pdfIn PDF document text
    • http://vitedotom.iblogger.org/stalker_game_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498330/normal_5fe42827e2ddc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5fdd75411735e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fdabac812992.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451754/normal_5ffb0b998f9c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_5fd3358eca677.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456134/normal_5ffe9b5ca8306.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gugamofizuxeg.epizy.com/dalaraguludiludokotujur.pdfIn PDF document text
    • http://vusevupitiwo.rf.gd/53533113901.pdfIn PDF document text
    • http://xunevonobi.epizy.com/argumentative_essay_template_examples.pdfIn PDF document text
    • http://jalugegaru.epizy.com/90569269408.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_off0000ed57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED57 5380 bytes
SHA-256: 23440f3558369671e0dceabc69e428106195887a45dee97774842ff00d58e680
font_01_sfnt_off0000ffb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB7 11372 bytes
SHA-256: 5c8d9ae6240a751f31162510f244233a6ba18a7542e4c21df2113637e651c8bf

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