Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58235bf25de3ab7…

MALICIOUS

PDF

77.5 KB Created: 2021-03-22 01:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 50b016eaa266865ecd5f92fb8da75897 SHA-1: e42040dd363abf8078202ff3f7bfef2d287fb984 SHA-256: e58235bf25de3ab7c3e629d00ff1afae6c68f57e8e90b9e4c746bdcf782190d7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm with numerous external URLs, many hosted on disposable domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'dangerous driving', likely intended to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=report+dangerous+driving+london+ontario PDF link annotation
    • https://cdn.sqhk.co/nobukomorur/gijghih/buduginamozuvidelazozipo.pdfIn PDF document text
    • https://cdn.sqhk.co/xejoxoka/6anfELY/wopemawosenar.pdfIn PDF document text
    • http://mateguwokalidub.getenjoyment.net/adelaide_high_school_zone.pdfIn PDF document text
    • http://naturaleone.space/tusozewepvd760.pdfIn PDF document text
    • http://macsk.space/61760417032a70mt.pdfIn PDF document text
    • http://ighelpcenter.xyz/nemor2jayq.pdfIn PDF document text
    • https://cdn.sqhk.co/felolavap/heich1k/6088159580.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/fadigad.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/I4gfhbw/lynx_fortnite_skin_for_sale.pdfIn PDF document text
    • http://capridigi.com/hieroglyphics_definition_egyptpp4qc.pdfIn PDF document text
    • http://kitixukizogutik.mygamesonline.org/city_of_endless_night_download.pdfIn PDF document text
    • http://yazansoft.com/canyons_ski_mapd2euo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d27091-675a-4fd7-b4a7-ff773ac29854/time_warner_cable_remote_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49698ff1-826b-4a15-9703-1a9648c474b6/soxolorusuxigodarivif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcd8dff8-9fa4-4a37-b282-97914a7829be/dance_like_new_song_download_djpunjab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7fc34f9-576a-4ad1-8603-ea7c901a05d2/new_yorker_magazine_renewal_rates.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/used_snapper_riding_mower_for_sale_georgia.pdfIn PDF document text
    • https://c18d9829-3add-4afa-bc87-35007fe3998a.filesusr.com/ugd/70c1ec_f60972f96656488e85376966c355e948.pdf?index=trueIn PDF document text
    • https://8650d040-a33d-467d-a608-6706f181f11b.filesusr.com/ugd/61b8bf_cfe9f1f5fdef4affa6dc806e812429a1.pdf?index=trueIn 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_off0000f066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF066 5196 bytes
SHA-256: 750e4996015ec99d4a9cd4ae35ba9d9ce265710ba85f36eaef8882c631646ba3
font_01_sfnt_off0001022f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022F 11332 bytes
SHA-256: d5a3263988c086d4dda1d46f96d8bb04aa07e9f04817fd997a363c27c5aa4b2d

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