Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6ff99ce54df632…

MALICIOUS

PDF

75.4 KB Created: 2021-05-16 01:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: e51205f57c2bd64946b38c4810748f82 SHA-1: 3f35a14e521be054e6b127daad035d09eb2d0e0a SHA-256: 2c6ff99ce54df63204ca5df027e8e9f64a2423f08bafb5fdce5bbd065850faae
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, and includes a UTM term that suggests a lure related to 'sports illustrated swimsuit models 2000'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or ad fraud. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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://xajibur.ru/strik?utm_term=sports+illustrated+swimsuit+models+2000 PDF link annotation
    • http://videohost.space/79628571582equ0u.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/vaburumudokawumipane.pdfIn PDF document text
    • http://streichpack.online/best_alarm_tone_for_android1qql7.pdfIn PDF document text
    • http://uorott.com/baby_shoes_for_sale_never_wornraslg.pdfIn PDF document text
    • http://getcreditcheck.info/clases_de_comunicaciones_oficiales2k8vc.pdfIn PDF document text
    • http://lunesygets.xyz/70516645592ajwdr.pdfIn PDF document text
    • https://tijagure.weebly.com/uploads/1/3/1/3/131398232/bubapuzopibowana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470542/normal_6037542415963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466680/normal_6021beac74ba8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445550/normal_5fcc8eafbb4d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0ac950e2-707a-4e47-8bf4-daface0ea9db.filesusr.com/ugd/356f11_d9471900b869448e9df4e1f36ddcd322.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e88330-3b23-4b00-bc87-c6dc07b438bc/how_to_work_lean_mean_fat_grilling_machine.pdfIn PDF document text
    • https://1d78cdce-0032-4a75-b9f1-030f6b068c24.filesusr.com/ugd/32f660_0e07a2bb7a7d4c75bc3c96d1dc81c86f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/ms_office_access_database_engine_2007.pdfIn PDF document text
    • https://b2d1eea7-aef5-47fc-962c-88b5513ecafc.filesusr.com/ugd/3a57bc_13ea4ac9ca4441708513c2d48782a1b1.pdf?index=trueIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_c471185c64d84156b7d1984ae5ce5518.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6827c8e6-11aa-4e99-9265-ed6c45e0e4c1/how_many_calories_in_the_double_down_sandwich_from_kfc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4123cedb-380d-4f02-ae37-87bb213931cb/sportspower_trampoline_14ft_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/bazipevewikixa.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/why_does_the_keto_diet_stop_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1b1a689-b794-402e-a234-056816e7960a/connect_directv_hr54_to_internet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af2305b2-b883-4e5e-bb1d-c70926ffe677/digikolizavizagevil.pdfIn PDF document text
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_ea8728be21a244c285e5b661c57b359a.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_off0000e7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D0 5576 bytes
SHA-256: 6a180ea522a95418c45f586242356d6355335d6bfe67fd7d40fee11e93bbd542
font_01_sfnt_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 10892 bytes
SHA-256: 8a3c5d52cd3b7cd6588ef557ce4f9da583e1595b18f5f14ebfecbfb0cea8f676

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