Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ed4861c7fdc88b…

MALICIOUS

PDF

83.1 KB Created: 2021-04-02 23:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7b7ee9f234d22e3de01fd4f6db4bb549 SHA-1: cd00ce5712a4e4d557e4973b18b7874592eabf75 SHA-256: d6ed4861c7fdc88b2e74ac4855b90d8c33199a31587fb89bfd308e01c6b98f68
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The presence of embedded URLs and the overall structure suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=evening+primrose+oil+benefits+good+for+hair PDF link annotation
    • http://roflan.site/sony_fs5_mark_ii_release_datelnzk5.pdfIn PDF document text
    • https://cdn.sqhk.co/nefowumik/bjf5PrC/cash_loan_business_plan_template.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/jajajbU/jexufejivura.pdfIn PDF document text
    • https://cdn.sqhk.co/bepasasa/WRgcVgd/sani-_cloth_prime_germicidal_spray.pdfIn PDF document text
    • http://cherrypimp.online/arqueologia_mexicana_plantas_medicinalesdcnie.pdfIn PDF document text
    • https://cdn.sqhk.co/jemowevu/hhdjaHJ/27160635716.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/8f2feef9-e73c-41e2-93f1-c6fffd24159d/my_maytag_dryer_wont_turn_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f94c3abe-931e-46e9-9910-4b421d8d627c/how_to_use_google_maps_route_offline.pdfIn PDF document text
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_9a3c1450a5a24d71ae191a98bb748847.pdf?index=trueIn PDF document text
    • https://ae9cd3fc-a2ed-4114-aa96-dd53a7e96ab4.filesusr.com/ugd/22cbe6_568518af0b8c4743bb959b05171d7813.pdf?index=trueIn PDF document text
    • http://pawubiba.epizy.com/amoeba_sisters_video_recap_biomolecules_chart_answers.pdfIn PDF document text
    • http://sedinuposib.rf.gd/notibi.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/the_long_way_to_a_small_angry_planet_read_online_free.pdfIn PDF document text
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_5279c7b18d5e40f495ed3f3274d916ec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e19952c-977e-42b5-9467-c11b38959fd5/msi_970a_g43_plus_front_panel_connectors.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/zewamodamuwu.pdfIn PDF document text
    • https://d62ff7d9-aefc-4ab8-8cdf-af38868aea16.filesusr.com/ugd/54b9a1_1b0acb12aaac4ec1af2d53f024a78ee7.pdf?index=trueIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_6983fab84bd140608a38124eaf547075.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waduzirader/nivizoretowumelob.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/lofupupugosunusesopimomer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ccb34a2-3fa9-449a-b32a-56e7ccdc46e7/can_vizio_tv_connect_to_bluetooth_headphones.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D1 5612 bytes
SHA-256: 01927ac89868db74dc6cecc97c60eb0c7b2ae08016faeaf6460469f4e58ddf6f
font_01_sfnt_off00011ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC4 10500 bytes
SHA-256: 9fa8222012fecd5de0d755fcd85dbe73e47c82d29e1ba8ed9cdd39796ba72325