Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edba176d3e4d53e…

MALICIOUS

PDF

74.8 KB Created: 2021-06-15 12:54:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62102fb93fcc4f3207374064c869f967 SHA-1: 6727e19f87fb6ae4d079605a4b1d870888b6bca1 SHA-256: 8edba176d3e4d53e61fff520989bdea2c45def4586dca845fa54ba17544b3ec9
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/pbw?utm_term=ma+premiere+fois+full+movie+123movies
    • https://static.s123-cdn-static.com/uploads/4450434/normal_5fcde23090b7e.pdf
    • https://cdn-cms.f-static.net/uploads/4486521/normal_60559be2ca6cb.pdf
    • https://cdn-cms.f-static.net/uploads/4393637/normal_60142ce77e423.pdf
    • https://nironaguvotu.weebly.com/uploads/1/3/4/5/134530025/51a4151a9fe0f.pdf
    • https://tedinuvade.weebly.com/uploads/1/3/4/3/134348171/9fe980.pdf
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5fdfc39080151.pdf
    • https://cdn-cms.f-static.net/uploads/4464715/normal_6063db164b28a.pdf
    • https://static.s123-cdn-static.com/uploads/4488810/normal_6002ebc6b9c39.pdf
    • https://cdn-cms.f-static.net/uploads/4376849/normal_601b872c091f8.pdf
    • https://cdn-cms.f-static.net/uploads/4463528/normal_605f543e8d945.pdf
    • https://pudijubo.weebly.com/uploads/1/3/4/3/134311311/2d050776.pdf
    • https://static.s123-cdn-static-d.com/uploads/4449774/normal_60b1aabb258ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b09d044b-f089-4e26-9f94-ffe5b1e73c47/39067973057.pdf
    • https://uploads.strikinglycdn.com/files/ac909eca-004e-49c4-ac0a-4ccf732b1a8c/how_much_does_a_sub_zero_fridge_cost_in_canada.pdf
    • https://uploads.strikinglycdn.com/files/ae2dd052-7e02-4cb7-b86c-d0eb634bf1ad/76890617493.pdf
    • https://uploads.strikinglycdn.com/files/bb8d37cc-fde1-49dc-9828-6b0d49aeb1a5/explain_difference_between_qualitative_and_quantitative_research_with_examples.pdf
    • https://uploads.strikinglycdn.com/files/b24b5139-ef2d-4849-8268-f44794f94087/primeros_auxilios_en_caso_de_atragantamiento_en_nios.pdf
    • https://uploads.strikinglycdn.com/files/598cbc9e-9403-4353-b42c-568a94533f98/best_resistance_bands_for_elderly.pdf
    • http://bitejite.pbworks.com/f/preset_converter_xmp_to_lrtemplate.pdf
    • http://vulifib.pbworks.com/f/lilabemivimur.pdf
    • https://uploads.strikinglycdn.com/files/eeca0f69-2b94-4d0e-b840-52ea49043b76/pigidesebafugexogev.pdf
    • http://razodegotit.pbworks.com/w/file/fetch/144905970/solution_statics_hibbeler_14th_edition.pdf
    • http://misabovu.pbworks.com/f/gododejapasu.pdf
    • https://uploads.strikinglycdn.com/files/4488befb-8d5e-4282-8e9d-c9de07e61110/38547010917.pdf
    • http://sodopateduke.pbworks.com/f/gta_san_andreas_mod_menu_android_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e912.bin
50a4ef28b449f3b764050cd7dad1b8fd2a37bcec0b4e26a33f3ea293f14da436		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE912 5460 bytes
font_01_sfnt_off0000fbac.bin
d865fbf27759f09b8ed21824d8e475080ef4590478dced59b3c05d4b8ae91f02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAC 10244 bytes

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