Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ed071b0e0a3dac…

MALICIOUS

PDF

87.8 KB Created: 2021-03-01 19:58:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 3dfdf8a8a6b81cc25d46bb490deeb006 SHA-1: 12410204fa134b159973e1176ae1de6169a9e837 SHA-256: 92ed071b0e0a3dac69ebfeb63c3f12e996fe4266376152ad492517fea6ffcf01
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable hosting and link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and the ML classification strongly support a malicious classification.

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://golowaki.ru/strik?utm_term=how+to+use+dbx+driverack+pa2 PDF link annotation
    • https://cdn.sqhk.co/rekutadis/Boiekhi/woodturning_face_shield_with_respirator.pdfIn PDF document text
    • http://optamorem.com/which_refrigerator_is_best_lg_or_samsung_or_whirlpoolg68fs.pdfIn PDF document text
    • http://idealslimitalia-official.site/gavitagarudolezosiwrj8zf.pdfIn PDF document text
    • http://50offstore.info/baa_nalle_madhuchandrake_kannada_movie_freemrd4l.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/KghBie0/64968932899.pdfIn PDF document text
    • https://cdn.sqhk.co/fexilejedit/vg3gflm/15354091651.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/jamhbjj/huey_p_newton_chair_for_sale.pdfIn PDF document text
    • http://helpcenter.business/9260609847692a8b.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/XvYjqTz/christian_songs_about_finding_peace.pdfIn PDF document text
    • https://cdn.sqhk.co/tilafukefuwe/4iaT63f/dopona.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikureta/NhgxOzY/bipugibatas.pdfIn PDF document text
    • http://jukexufepezaj.22web.org/is_ups_cheaper_than_usps_international.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/88836176826.pdfIn PDF document text
    • http://boost-shop.xyz/esfolio_pure_skin_milk_essence_mask_sheetyf4yf.pdfIn PDF document text
    • http://8gusevshop.space/zuzoturamadezemupemamituzewg8.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/jjajihg/43517884712.pdfIn PDF document text
    • http://orbitan.fun/skype_for_iphone_6s_plusemsxt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jokilezitewoj.epizy.com/fimatilatisanenewaduvu.pdfIn PDF document text
    • http://lotawopobakitab.epizy.com/girl_boss_book.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_off0001178d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178D 5552 bytes
SHA-256: f2c4c4c9f434a251e70f5457a85ff44eb0d321633270054ee63df5801672c8e8
font_01_sfnt_off00012a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A8D 11112 bytes
SHA-256: bded48d5caeda786b7d81b9c0e42cad9ea311373e8ebb88ae8608a0dca1f17f7

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