Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ac2965e31bf431…

MALICIOUS

PDF

85.5 KB Created: 2021-05-01 07:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 13d29301baeaed7b654f3bf6084b9244 SHA-1: 506cfcfa0393d1851d48459393489965bfe130aa SHA-256: d7ac2965e31bf4315d27228472c953cca5747caeb9e98592098b01ee35573c51
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=burger+king+2+for+6+commercial+2020 PDF link annotation
    • https://cdn.sqhk.co/kigimole/zggpjq3/pujatujozulanulo.pdfIn PDF document text
    • https://tamipabofoj.weebly.com/uploads/1/3/4/8/134876193/buvepofigep.pdfIn PDF document text
    • http://teguruta.medianewsonline.com/petipumig.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/28jdgdt/aambala_tamil_full_movie_mp4.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/bOgcV1n/63973880722.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/iJhePij/ryobi_1700_pressure_washer_home_depot.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/sukijuxutasepotuzima.pdfIn PDF document text
    • https://juxapokidopelif.weebly.com/uploads/1/3/1/6/131606881/sonuvedujalerem-jaduk.pdfIn PDF document text
    • http://giwudogor.scienceontheweb.net/avoiding_the_use_of_chemical_pesticides.pdfIn PDF document text
    • https://fomoxejuj.weebly.com/uploads/1/3/4/0/134000143/4369685.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/Xppghb0/wanis.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/fjcAicu/xezarurumujiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://timagugovoxo.onlinewebshop.net/benefits_of_fearing_god.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/how_do_i_get_into_the_bios_on_a_panasonic_toughbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/yahoo_messenger_sign_in_without_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/37044379775.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/english_language_lesson_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/83151451321.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/french_cognates_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/what_does_the_saying_clock_is_ticking_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/february_2019_current_affairs_ibps_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10043 2952 bytes
SHA-256: 6f6c5a8fb5e62cfd2b6ff76f758e0f05a98695d5bac735cd019a42cb5e5649ba
font_01_sfnt_off00010ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD0 5564 bytes
SHA-256: 523bcf9d9fc53fed0045390e9c740efd5ad29cba27be9e469d48c12095be2709
font_02_sfnt_off00011db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB6 12792 bytes
SHA-256: 3f5e01c7beffff2a6fecfd56ce03bd2bfd88fe372e73b3b968d6390046b04e89

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