Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebeebc4c32817c2a…

MALICIOUS

PDF

74.5 KB Created: 2021-03-21 12:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 02e3aaf87ede3fa1348afa30586ce396 SHA-1: ddc45c2ae50d7ab91bf5f4d16d259689540e1ab4 SHA-256: ebeebc4c32817c2a9524a9336825cdfd0bc0752b2216fd869804ee83efa3aeaf
206 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/strik?utm_term=why+is+my+ge+fridge+not+dispensing+water PDF link annotation
    • http://kosamaritaj.getenjoyment.net/what_are_some_examples_of_conflicts_of_interest_in_healthcare.pdfIn PDF document text
    • http://lewuvumo.sportsontheweb.net/examples_of_personification_in_literature.pdfIn PDF document text
    • http://groshyk.site/34357402161isywh.pdfIn PDF document text
    • http://centerverifybadge.com/microsoft_sql_server_2017_reporting_services_licensing9vgo7.pdfIn PDF document text
    • http://rosotorejujuv.22web.org/ge_profile_customer_service_phone_number.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/what_is_the_best_call_blocker_for_iphone.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/sijoga.pdfIn PDF document text
    • https://wutodifutatur.weebly.com/uploads/1/3/2/8/132814097/a48831.pdfIn PDF document text
    • http://teksalle.xyz/can_you_do_the_10_day_green_smoothie_cleanse_while_breastfeedingi126j.pdfIn PDF document text
    • http://patusare.22web.org/indesign_polaroid_frame_template.pdfIn PDF document text
    • http://moymagazin.xyz/app_to_snapchat_picturesaohue.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/51249796398.pdfIn PDF document text
    • http://xenejesujotolud.mypressonline.com/liref.pdfIn PDF document text
    • https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/7ca313cdbf22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_ffe4e47eeb374414b1ff1949d09a976f.pdf?index=trueIn PDF document text
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_4be88a6f0de34141a1e7bd8c0bcb9f1d.pdf?index=trueIn PDF document text
    • http://talagil.epizy.com/dieta_dr_budwig.pdfIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_c0beaebd8a1841c5ad5529adcdaa8d92.pdf?index=trueIn PDF document text
    • https://1347de4c-4e54-429a-b84c-372e60bc5a2b.filesusr.com/ugd/6c98bc_4cbd356939be4b3b98e7b965cc0130fc.pdf?index=trueIn PDF document text
    • http://wibenuke.epizy.com/city_car_driving_lamborghini_huracan.pdfIn PDF document text
    • https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_5111f4cebe4c4f9b98a538a424614422.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_off0000e427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE427 5628 bytes
SHA-256: 6aef74cac6db6ab3f2d41b545d1764532f8791a9f416a3dc5a2c2138a0c88700
font_01_sfnt_off0000f746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF746 10480 bytes
SHA-256: d26d9d06ed8a5ce67a738a11eb3f873f0bde8c78c90387df30ee249998897f50