Malicious PDF — malware analysis report

Static analysis result for SHA-256 a389a9a3b7e92a27…

MALICIOUS

PDF

76.4 KB Created: 2021-04-18 23:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 62eae481e8648eb2aac2deae5547d8dd SHA-1: 24679c9001a9a24aa9ec22c98df0f3a50bc0a1d7 SHA-256: a389a9a3b7e92a276ebcc521004abc4fe32565f23d671a821eb7df0ed2d27b2b
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL points to a page that appears to be a lure for 'hansel and gretel novel pdf', suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the nature of the link farm suggests the PDF is designed to redirect users to potentially malicious sites.

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 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.
  • 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://leonvi.ru/strik?utm_term=hansel+and+gretel+novel+pdf PDF link annotation
    • https://zemibojonu.weebly.com/uploads/1/3/5/3/135324970/ff0247b02.pdfIn PDF document text
    • https://cdn.sqhk.co/nazutupim/mOCgihd/infection_control_training_nz.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwatak/fr4hfNa/2085882467.pdfIn PDF document text
    • http://pevazaw.mypressonline.com/93211092813.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/aaranya_kaandam_script_free_download.pdfIn PDF document text
    • http://gosunenibunale.getenjoyment.net/cpld_and_fpga.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/rabanuguxufel.pdfIn PDF document text
    • https://sigogaxeba.weebly.com/uploads/1/3/4/6/134620414/3e768f1e1f0f.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/tuxutedi/linojavaluzafa.pdfIn PDF document text
    • http://luwawabegopit.rf.gd/calendario_uefa_champions_league_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/lowrance_x4_pro_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/ololoid_meme_generator_app.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/47441587544.pdfIn PDF document text
    • http://nadiripu.epizy.com/10th_class_result_2019_faisalabad_board.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/ryobi_760_cfm_backpack_blower_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/zekurupijubozujomipolobel.pdfIn PDF document text
    • http://fegoluvarelewum.myartsonline.com/lean_six_sigma_green_belt_certification.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/ayo_and_teo_rolex_musicpleer.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/dash_diet_phase_1_food_list.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_off0000edbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBE 5228 bytes
SHA-256: f0c90456214b9dc6d52bf8d03d205f387110e076b7b26dc7ca6ba2aeeb70fcce
font_01_sfnt_off0000ffa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA3 10804 bytes
SHA-256: b59de2ad15c8e708e7edaacd6228cb19ad364621793bda9dbe44a1e46e141d3f

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