Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0515477247e67de…

MALICIOUS

PDF

80.5 KB Created: 2021-02-24 20:10:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 16037f50ba48c306eda4df38a5ffa2b5 SHA-1: 970b6f95157feb554aa51bef0e16faa5e6429674 SHA-256: e0515477247e67deefb093aee3cca952a3f9da72eb13e044275f9f7d86abb56d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and is flagged by heuristics as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of many external links points to the document's role in redirecting users to potentially harmful 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://crophysi.ru/wix?keyword=time+won%2527t+let+me+go+chords PDF link annotation
    • http://xuxetosufuzo.getenjoyment.net/on_the_road_truck_simulator_console_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/ifG0lgd/46494309758.pdfIn PDF document text
    • http://puviwaxeraw.22web.org/wirolagotuluxebapopularen.pdfIn PDF document text
    • http://yesitalia.fun/nexepilupozalavapunubup802z.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/G7ihpha/65760164501.pdfIn PDF document text
    • http://usecabinets.xyz/nizunewizagalivogowtwe.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/ibiiggM/vector_full_mod_apk_1._2._0.pdfIn PDF document text
    • http://tovelksa.website/the_white_princess_netflix_francevfy2v.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/logo_gmail_fundo_transparenteqxotr.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/yamaha_dtxplorer_drum_set.pdfIn PDF document text
    • https://cdn.sqhk.co/lozukoxokir/Njhiajg/merchant_services_jobs_houston.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/acer_aspire_e5-571_specifications.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/bibF9cE/dolby_on_record_audio_music_apk.pdfIn PDF document text
    • http://krym.today/688743770566xpeh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutexuvidag.myartsonline.com/john_deere_48_mower_deck_parts.pdfIn PDF document text
    • http://zewadajimenu.rf.gd/69037637868.pdfIn PDF document text
    • http://xaxidos.epizy.com/sujetotumibijafovigoziz.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_off0000fe81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE81 5220 bytes
SHA-256: 703c21b82cf793c9e65d71092fe0703653aed98d81b2eb2e6fd4baf0c5ed441a
font_01_sfnt_off0001102f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1102F 10668 bytes
SHA-256: 0f202ed7a08f0ca54d4493ffef8d8fa9b2733ea331738c07f4201c78bdd91e43

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