Malicious PDF — malware analysis report

Static analysis result for SHA-256 6723ef4ad75f9eae…

MALICIOUS

PDF

68.0 KB Created: 2021-01-22 03:33:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0b87d08146ba70e702987ecbc903894a SHA-1: b1c60bb25e5f9c093fd1d447545b0aa07bbafbf6 SHA-256: 6723ef4ad75f9eae7e760ed8033cc25594cec997cbb610aae62dee7652111247
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure indicate an attempt to trick users into clicking through to a potentially harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=action%20trucking%20edmonton PDF link annotation
    • https://site-1240055.mozfiles.com/files/1240055/ice_sheet_forming_on_bottom_of_freezer.pdfIn PDF document text
    • https://jarofuzaduse.weebly.com/uploads/1/3/4/5/134502270/nitupalaroselo-dikideme.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/iKihgc9/7765366536.pdfIn PDF document text
    • https://site-1203080.mozfiles.com/files/1203080/at_t_tv_customer_service_support_number.pdfIn PDF document text
    • https://site-1195801.mozfiles.com/files/1195801/ice_princess_soundtrack_download.pdfIn PDF document text
    • https://site-1176846.mozfiles.com/files/1176846/zizusamiwumom.pdfIn PDF document text
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/galuwepodem_vulalidixagi.pdfIn PDF document text
    • https://site-1166653.mozfiles.com/files/1166653/kgf_amma_song_tamil_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5fd894a18f459.pdfIn PDF document text
    • https://site-1180366.mozfiles.com/files/1180366/lock_screen_resolution_windows_10_gpo.pdfIn PDF document text
    • https://tuxewuwa.weebly.com/uploads/1/3/4/7/134776055/zutozoj_ziduseviwojataf_tovipikenog.pdfIn PDF document text
    • https://zupuluduwiwafop.weebly.com/uploads/1/3/2/6/132681460/5749cbf4f7b.pdfIn PDF document text
    • https://zumizosapozogem.weebly.com/uploads/1/3/2/6/132681504/sinadawix.pdfIn PDF document text
    • https://site-1257128.mozfiles.com/files/1257128/8467261011.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/febopa/guidelines_for_pneumonia_vaccine_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/pajipilubebebunipe.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/77707031972.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_off0000ce4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4C 4892 bytes
SHA-256: 54174ad6a6a9ae035a8824f190adc4bd173542a725e89cb6fe129e119f40fbcf
font_01_sfnt_off0000dee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE2 11152 bytes
SHA-256: 096de9e2df0b802dff65a6a54468943c944ce11b4aa8324c711a18531fd92ded

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