Malicious PDF — malware analysis report

Static analysis result for SHA-256 886c9ae0d3d6ba14…

MALICIOUS

PDF

83.4 KB Created: 2021-06-03 07:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6fb22a2e5c3240940848f856e6414f41 SHA-1: 0b9a2bc1988371fae816bf1448f827a407aa31ab SHA-256: 886c9ae0d3d6ba14dda99976b10a36a77e600351cea70614ac1b98c2930ebed3
206 Risk Score

Malware Insights

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

This PDF document is classified as malicious and exhibits characteristics of a callback phishing or tech-support scam. It contains a large number of external links, many hosted on disposable domains, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The heuristic 'SE_CALLBACK_LURE' specifically indicates the document's intent to trick users into calling a phone number under the guise of urgent issues like billing or security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://resalured.ru/123?utm_term=due+diligence+report+format+as+per+rbi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421474/normal_605bc2a1ae4cd.pdfIn PDF document text
    • https://bowogemiris.weebly.com/uploads/1/3/4/3/134316512/sarokuwamixosun.pdfIn PDF document text
    • https://wasatetokis.weebly.com/uploads/1/3/4/5/134513062/3897915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5fd0f51c4a266.pdfIn PDF document text
    • https://sitixibabu.weebly.com/uploads/1/3/4/7/134749551/xegoxi_fulosopujebupos_kagexitasave_wilegidinupefoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489839/normal_6000bc4978596.pdfIn PDF document text
    • https://dajetulanew.weebly.com/uploads/1/3/4/3/134309067/6229152c09d.pdfIn PDF document text
    • https://lunokebu.weebly.com/uploads/1/3/4/6/134648327/7db14a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_60286c6facdd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ff67180a-d1e3-4187-b288-73192e68ade8/nowadidabaziwekepaw.pdfIn PDF document text
    • http://zuwofig.pbworks.com/f/vofamedivekijate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/791de56d-9ee6-47f7-a48f-486da3bfd345/how_to_turn_on_casio_fx-9750gii.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d793486-a031-4740-86b6-f7cdc022613e/reading_a_metric_ruler_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6f7024b-bfab-494b-8c5e-8b96bbc100b1/juvinirijulijugodomi.pdfIn PDF document text
    • http://dimutojopog.pbworks.com/f/word_problems_dividing_decimals_worksheets_6th_grade.pdfIn PDF document text
    • http://wiwedano.pbworks.com/w/file/fetch/144425382/recep_ivedik_4__35_dakika_full_izle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fd1431d-66d6-4227-a4c4-50fefbfba82c/sandwich_book_report_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b014594-9d14-43ae-bdc8-005de40280c8/52463979314.pdfIn PDF document text
    • http://pudamalulera.pbworks.com/w/file/fetch/144548355/secret_language_of_birthdays_november_5.pdfIn PDF document text
    • http://lexibitite.pbworks.com/f/94931798806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e667c781-6a4b-44f0-89b6-b958fc0f2e5d/25718639369.pdfIn PDF document text
    • http://ronuzexem.pbworks.com/f/sivotogavejefoli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f16325af-e586-4765-889d-62f2a326584f/99581517305.pdfIn PDF document text
    • http://mikabipi.pbworks.com/w/file/fetch/144431904/msp_starcoins_hack_no_survey.pdfIn PDF document text
    • http://xojifot.pbworks.com/f/clicker_heroes_import_code_editor.pdfIn PDF document text
    • http://nebapelamive.pbworks.com/w/file/fetch/144532104/ver_corazones_y_almas_pelcula_completa_en_espaol_gratis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E0 5496 bytes
SHA-256: 87367464cbd31927d5edaf40b015d45d67f4b1f52ee38f0cf3a1e9507e40c700
font_01_sfnt_off00010c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6B 10848 bytes
SHA-256: b472201e2495860f1b37c0fcf97ac32cdf98e59a5cdfdcd30dcbbb4de475b173
font_02_sfnt_off0001317d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1317D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3