Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df65bd3fc8585e5…

MALICIOUS

PDF

84.7 KB Created: 2021-04-28 05:10:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 67b0a91fa7253fb10376d4eebc8dcee3 SHA-1: 24fcb9affe7554cfbba13692784c6c9d3f0db35d SHA-256: 6df65bd3fc8585e556f4229e808974b7ce98c1f0e0694078a35f6af8a43bad0c
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically targeting users searching for printer error information. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://dafemum.ru/strik?utm_term=hp+8600+printer+error+state In PDF document text
    • https://static.s123-cdn-static.com/uploads/4368229/normal_600323e81b6ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_60244cb3583b4.pdfIn PDF document text
    • https://ruxunomitebapat.weebly.com/uploads/1/3/1/6/131606858/3236538.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/is_no_game_no_life_light_novel_good.pdfIn PDF document text
    • https://titamifafipife.weebly.com/uploads/1/3/4/3/134315234/bexifefebi_sumak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407331/normal_5ff47d7b271f9.pdfIn PDF document text
    • https://jugusunoju.weebly.com/uploads/1/3/4/6/134625161/rawosom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471711/normal_6057bee5ebc6d.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/sozim.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/the_whole_brain_child_book.pdfIn PDF document text
    • http://lologunaw.mygamesonline.org/lorifasojobebuvigi.pdfIn PDF document text
    • http://mezeferatitora.scienceontheweb.net/manual_ableton_live_10_espaol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426955/normal_5fed156ca2fe2.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/tupofelasujewas/lagu_tarling_cinta_indonesia_taiwan.pdfIn PDF document text
    • http://tosemasikelo.epizy.com/1001_arabian_nights_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/mesemagogige.pdfIn PDF document text
    • http://juwijez.rf.gd/free_gantt_timeline_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/80919678325.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/best_advanced_english_speaking_course.pdfIn PDF document text
    • http://fusisalumipever.epizy.com/fotuvevoje.pdfIn PDF document text
    • http://jijaxipejor.rf.gd/ronapiriroxex.pdfIn PDF document text
    • http://fotopokidag.epizy.com/best_bollywood_movies_hd_site.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_off00010fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAC 5232 bytes
SHA-256: 4a44bf31584055835c5bd4ee08a60a801ffd7c7041255f30097bf7bf853b86c3
font_01_sfnt_off0001217d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217D 10700 bytes
SHA-256: 60243454daada76b2ba1045e8bb0af5e122ea16ffaef38d6c9ffaa186a3cd002

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