Malicious PDF — malware analysis report

Static analysis result for SHA-256 7576f845502cce44…

MALICIOUS

PDF

70.8 KB Created: 2021-02-22 00:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 72e7fc4d7f26d9e6ca20988b9fd3e5e1 SHA-1: e4f2c1f005d8e97083c42ef8efeb0aa8dabf7792 SHA-256: 7576f845502cce44412a08425b0685e931f6604627a9ca04fefd87c3bda806a0
214 Risk Score

Malware Insights

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

The file is a PDF containing a large number of embedded links, many of which point to known malicious redirectors or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection to malicious URLs.

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
  • 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.
  • 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://yafferge.ru/strik?utm_term=intex+sand+filter+and+saltwater+system+manual In PDF document text
    • https://tepukijamuboze.weebly.com/uploads/1/3/5/3/135301813/6982604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465387/normal_5fe164d8ebaf4.pdfIn PDF document text
    • http://fikapopupalake.iblogger.org/aankhein_teri_kitni_haseen_ringtone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485322/normal_5ff97d6553f33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386842/normal_6016b452d7afe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376619/normal_6011893cc1e50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476927/normal_5ffcbbe5e9faf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408721/normal_5fdd9d0d9e985.pdfIn PDF document text
    • https://jonolepazom.weebly.com/uploads/1/3/4/5/134520471/5516920.pdfIn PDF document text
    • http://kenaxifinot.22web.org/chipotle_application_form.pdfIn PDF document text
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/2464648.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/8355149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_60194e21062d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5fe7c2cb26e87.pdfIn PDF document text
    • https://ziwagugo.weebly.com/uploads/1/3/4/1/134131511/xokapiledororal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wufofot.rf.gd/44516167083.pdfIn PDF document text
    • http://lenadupubop.rf.gd/smart_audiobook_player_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/wulumovane.pdfIn PDF document text
    • http://pubitawiwinas.rf.gd/15253993894.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_off0000d884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD884 5252 bytes
SHA-256: 7154e4c4280334b2544d86dc2f666ab1ccb36871bf7dd3f2825c2141ac66d1e4
font_01_sfnt_off0000ea67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA67 10532 bytes
SHA-256: 09c09bf771e6aacf38c47b3b637dad38908e7bf0e26bec11ac1e5f3075b20051

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