Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3eb4954dd078d40…

MALICIOUS

PDF

86.3 KB Created: 2021-03-23 04:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d4e3eb4bb6c7cf16658e9bb17d771a40 SHA-1: 696bc58bfeb32fa4485ddc312f21ba5595fdea35 SHA-256: d3eb4954dd078d4043e2075928ef01ddc26815d9b4d802bcb6795acb3c8acb00
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant portion pointing to disposable hosting and potentially malicious domains, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to external malicious content.

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://zajinet.ru/award?keyword=embroidery+designs+books+free+download+pdf PDF link annotation
    • http://betmoy57.com/how_do_lionfish_adapt_to_their_environmentzgjgt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391634/normal_6050b52a5bd0f.pdfIn PDF document text
    • https://cdn.sqhk.co/nukusigemug/iAhdDes/bein_sport_2_turkiye_yay_n_ak_s.pdfIn PDF document text
    • http://fsbsiod.com/91269592358u2b5e.pdfIn PDF document text
    • http://soldatskaya6.ru/fusadavogubipidasisuravu9z8b2.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/dLbhjhh/how_to_play_chess_in_urdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_602c387371b5d.pdfIn PDF document text
    • https://cdn.sqhk.co/mekoposa/iavH1gd/63810267024.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/c5igggB/bojarisoro.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/ahdXgi6/strategy_pattern_c.pdfIn PDF document text
    • http://bilet-pdd.site/orbit_water_timer_4_stationtvpay.pdfIn PDF document text
    • https://cdn.sqhk.co/tikikizeveni/hWZp8nC/adamantine_weapon_5e_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/iegitjh/54204836296.pdfIn PDF document text
    • http://mainsale.info/g_shock_g1000_mudmaster49dxf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446162/normal_5fd2d1c1a023a.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/fusidejebi/android_ndk_build_shared_library.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/sharp_air_conditioner_egypt_catalogue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa75805f-8ed6-43b3-a4cd-385eeea7d613/lexijikawunavodivalazada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7260ae90-fa7c-46be-8c0a-fd2d51a11a21/zuzuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2685781c-aadd-4468-a69d-27e07c17a3f2/learn_chinese_in_5_minutes_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/17372363770.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/guzodipisotekim.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAE 5716 bytes
SHA-256: dfef2ac2d6d1c08f0e2b900a1e297996b75c51acbd2f34e814ef73a9db5ebf0a
font_01_sfnt_off00011027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11027 11376 bytes
SHA-256: 3d445bc07e4c4d86215b71696e30582dbe2d60ff83de0329cfc6ed5f1793ed03
font_02_sfnt_off00013648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13648 16060 bytes
SHA-256: 503f5200e83b189a546b6c6e1d808633a9135186956fe76ff9bd78de3d91e3c6

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