Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eeb1b090a151d11…

MALICIOUS

PDF

84.8 KB Created: 2021-04-29 03:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6d75e012e265e9758f622b80e10eaebe SHA-1: e8074ecc05a772abd371bd1655252501492d6dc1 SHA-256: 5eeb1b090a151d116b058b937c088f41198c57c8bc9c1317cbe819c6f4406764
244 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to disposable hosting or redirector infrastructure, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, contains text related to 'How to adjust g shock for daylight savings time', suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=how+to+adjust+g+shock+for+daylight+savings+time In PDF document text
    • https://cdn.sqhk.co/fibafape/0Bjejfh/80600785745.pdfIn PDF document text
    • https://taxufutusa.weebly.com/uploads/1/3/4/5/134514166/c66bdeb1cb79.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/ggaibgf/1234010408.pdfIn PDF document text
    • https://befojawukirafa.weebly.com/uploads/1/3/4/8/134855882/garafakudap-matab-larup.pdfIn PDF document text
    • https://daxogane.weebly.com/uploads/1/3/2/8/132815110/6093214.pdfIn PDF document text
    • https://novenoberube.weebly.com/uploads/1/3/0/7/130776641/6602283.pdfIn PDF document text
    • https://cdn.sqhk.co/wenudiwome/gh8jfkd/map_of_uk_counties_and_major_cities.pdfIn PDF document text
    • https://kovibokasekur.weebly.com/uploads/1/3/4/8/134880184/2906671.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/chhicig/joxenizamabivinoxudu.pdfIn PDF document text
    • https://cdn.sqhk.co/vezubusevof/cU0jbtE/66944435893.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e5b7f393-9b83-42c5-a877-5b85c0c772c8.filesusr.com/ugd/77b42d_5591b03c931243cb8c583f4515b41412.pdf?index=trueIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_d628c2f45ec84b5c921e828ba146cc7c.pdf?index=trueIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_ac61e20581d04ba791f00739a047122c.pdf?index=trueIn PDF document text
    • https://c78267de-509c-4cb0-9394-6b21b7876e04.filesusr.com/ugd/290ce3_4fe27dd63afb426ca8e4c1434cb56d93.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4391f9f-2f22-490b-862d-3318ad6a0c17/29950892344.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/fipewimonetowavukupaguj.pdfIn PDF document text
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_196914abb2fd44469324be2485791bd6.pdf?index=trueIn PDF document text
    • https://47e244ab-6b1f-4ae7-97e8-86de5b619f9f.filesusr.com/ugd/e1d12c_2a9e3de18fd7448faeae5bcb153b4fac.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c32be5de-e54d-4c76-93b7-e1bf5eebcfc3/how_to_get_a_career_in_software_development.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7345383d-b676-485a-b80a-61be8a101a9c/xoriminamasoku.pdfIn PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_6cdc1732ddc64ce9b38c0eefc6c35ae9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d0e1f3-da67-42e9-b20b-7a133775ffda/67841086410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c6da89d-de06-45f0-a0f1-032e9c3a1a5c/bose_companion_2_series_ii_multimedia_speakers_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/ielts_academic_writing_task_1_samples_band_9.pdfIn PDF document text
    • https://c941d99d-b58b-4215-81ce-525e38db2b81.filesusr.com/ugd/2dc4cf_05cb3c79de524df29ed45608f26317fb.pdf?index=trueIn PDF document text
    • https://9049409e-dcbb-43fe-b7cb-0f7a5d042cf1.filesusr.com/ugd/e59eee_c8c3d068eee74bf9a59fe78b5659c99e.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_off00010b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B93 5788 bytes
SHA-256: 430608057a8ef96849d4f9859de4144c1b8270f4de79395e952d1a3eeae40085
font_01_sfnt_off00011f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F46 11172 bytes
SHA-256: bc0b848e39b5718047ba242a9d91138664fca6766aba92204b2ceb4a11ec5a17

Open this report in the interactive analyzer, or submit your own file for analysis.