Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5688992f7189fa…

MALICIOUS

PDF

75.0 KB Created: 2021-02-17 20:14:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 413bbda274233d9295aef7c57bfc0f31 SHA-1: abd93a742442d00b96457d9756bcfe6fe37f79fc SHA-256: 9e5688992f7189fab0b00b76588a83f9ff2ad0e3eefdafc50dae3528b49175b1
146 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 phishing or trojan threat. It contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, further obscuring its malicious intent.

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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://maypoin.ru/strik?utm_term=what+kinda+dog+was+old+yeller PDF link annotation
    • https://wiwazojuxosupud.weebly.com/uploads/1/3/1/3/131379189/e175c5a843054.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/ybjejao/mano_jungle_adventure_download.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/iaidJhj/70819333332.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450042/normal_601de5f531a7b.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/aibzgFG/musaxeroxukojitafediwumug.pdfIn PDF document text
    • http://fitit.space/mepikosoo8s61.pdfIn PDF document text
    • https://zunurevupuvofas.weebly.com/uploads/1/3/1/4/131438471/pofivafokovizi.pdfIn PDF document text
    • http://hhizmet.com/b_com_1st_sem_kannada_text_book_downloadigznl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413567/normal_5fd2de1ce93c4.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/KidQifq/qr_code_scanner_software_free_download_for_pc.pdfIn PDF document text
    • https://lubikumak.weebly.com/uploads/1/3/1/4/131453733/783388.pdfIn PDF document text
    • http://momenujobig.22web.org/building_an_android_library_tutorial.pdfIn PDF document text
    • https://mefimume.weebly.com/uploads/1/3/1/4/131437875/4752245.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vedisupekak.epizy.com/genunamis.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/android_whatsapp_notification_like_iphone.pdfIn PDF document text
    • http://gafibis.epizy.com/48195950622.pdfIn PDF document text
    • http://banidokote.epizy.com/sipog.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/mewobusixodenure.pdfIn PDF document text
    • http://faluzarawajuxos.epizy.com/mefez.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_off0000e736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE736 5360 bytes
SHA-256: 74849dea5562f13cc4c49f7aae51e751c7b7b4084878412588a190e5979de77d
font_01_sfnt_off0000f986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF986 11664 bytes
SHA-256: 68a3fe425fc482894b8a8ae6a4a9a0fd0d501ff9b6a84fedfc9ca1e8ab598f44

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