Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4667d6aecebb26…

MALICIOUS

PDF

79.0 KB Created: 2021-03-24 04:15:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d46c496f2da48e331a0a3c09c3040134 SHA-1: 597d92dfdfa95628d87c9a4ea02810eb76a7ca20 SHA-256: 2e4667d6aecebb260a5a1f4dfb12957989c84dc5c5ca43ccd256dd6a640e4961
126 Risk Score

Malware Insights

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

The PDF contains numerous URLs pointing to disposable hosting, indicative of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious websites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/award?keyword=dibujarte+tomos+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393181/normal_60323c5732c57.pdfIn PDF document text
    • http://chambre.xyz/90620904978p0rk7.pdfIn PDF document text
    • https://cdn.sqhk.co/jonilinenuvo/jiFQsA4/87603880997.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413982/normal_5feeef19c7660.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/KonhfCg/voice_recorder_download_mp3.pdfIn PDF document text
    • http://xibawolafubiz.getenjoyment.net/40772034762.pdfIn PDF document text
    • http://mofonuf.medianewsonline.com/zebibadubixajolalejusu.pdfIn PDF document text
    • https://cdn.sqhk.co/viwitukaz/YqlZ6ih/bollywood_movies_2019_war_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/gevanadu/aAfihjc/sezup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_604c9727dd203.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481072/normal_5fec380e56cbb.pdfIn PDF document text
    • http://24goodstore.site/31881829432uwhuv.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/belezebitomax1sb.pdfIn PDF document text
    • http://libralab.digital/vanity_fair_bras_outlet_canadaiz8nj.pdfIn PDF document text
    • http://vuxilenusip.mypressonline.com/doctor_sleep_movie_review_reddit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385434/normal_6020a56468b75.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/JtPijjd/dual_monitor_desktop_wallpaper_windows_10.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/do_electronic_air_purifiers_work.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xobiluwova.epizy.com/13198925016.pdfIn PDF document text
    • http://risogida.rf.gd/95928279529.pdfIn PDF document text
    • http://lojiwifi.epizy.com/64507551660.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/viwuvajegamodujixigimomap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B9 5144 bytes
SHA-256: dcb5fecd314b3d45a73ed229eb073faffc84e6dbb3e0578021a47c878c52c139
font_01_sfnt_off0000f83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83B 12604 bytes
SHA-256: d50c0c041db10544f9e7c9f653be886a7c937007833fb23d5bbcbcb0654d3e59
font_02_sfnt_off00012092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12092 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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