Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d3fae8158d9896…

MALICIOUS

PDF

77.7 KB Created: 2021-02-28 06:16:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 034d7de0c1463b8d6d9fea9e4d47f0a5 SHA-1: a747cc286072904399dfe6a1437e25ce6bad258b SHA-256: c7d3fae8158d98965ff9ff208aa95e1871d8326d11bb601960086ecbfb8ab82e
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, and includes a lure related to phone battery reconditioning. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://soxebez.ru/strik?utm_term=how+to+recondition+a+dead+phone+battery PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382192/normal_601e4fe528c23.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuxopova/YcjaFjb/nails_of_america_kingwood_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/pumevigatare/bxgcGfd/skip_bo_app_for_android_free.pdfIn PDF document text
    • https://rolurenogilu.weebly.com/uploads/1/3/4/0/134096536/jesapitazez_susar_giburorevibamug.pdfIn PDF document text
    • https://cdn.sqhk.co/katafojedul/ihf3hbQ/football_training_equipment_amazon.pdfIn PDF document text
    • https://bugebapujeze.weebly.com/uploads/1/3/1/6/131606260/18b613cf8e.pdfIn PDF document text
    • http://gutudixob.iblogger.org/juguvebewusovoz.pdfIn PDF document text
    • https://cdn.sqhk.co/milibotobov/ujcqJhc/sezefokutexe.pdfIn PDF document text
    • https://cdn.sqhk.co/togobetof/jjgdicI/2d_mini_golf_game.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/hRje9ii/write_on_windows_surface.pdfIn PDF document text
    • http://geguxejap.22web.org/tijirukozidurajusovuj.pdfIn PDF document text
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/c2e12ebd9ccb.pdfIn PDF document text
    • https://cdn.sqhk.co/zowegifivufo/jckjggg/wapulefenuladonogipi.pdfIn PDF document text
    • https://foxogitasi.weebly.com/uploads/1/3/2/7/132740511/6ea0554.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/ijEhhhf/25357535731.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sulegezusaz.epizy.com/wonder_book_report_ideas.pdfIn PDF document text
    • http://zuzofanurug.rf.gd/rowilututunijanomobemaru.pdfIn PDF document text
    • http://lijazujarakowom.epizy.com/best_animated_movies_2018.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_off0000f309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF309 5244 bytes
SHA-256: 2498b5874533b5af0ccfee3071a7dbaf4ca9706173db8123c09488320bf1dcc7
font_01_sfnt_off000104e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E4 10652 bytes
SHA-256: a15182ff5fae65f9280998a198c376c82c7f3fa01caa439d31ccd90daad1e867

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