Malicious PDF — malware analysis report

Static analysis result for SHA-256 750d0232e5ecc8d2…

MALICIOUS

PDF

94.9 KB Created: 2021-05-20 06:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 265c5f2d6b66ac6589fe9d0766bf6131 SHA-1: 2d5fd2256dcc165f84e3449fdcbb73dba432b4f7 SHA-256: 750d0232e5ecc8d2d318db80a09406b13a72ceb22cb14e826eba9c5af90b5540
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a link farm, suggesting it's designed to drive traffic to external sites. The embedded URL points to a site with a suspicious domain, likely serving malicious content or phishing pages. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, possibly involving the distribution of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://nipisod.ru/strik?utm_term=easy+origami+christmas+tree+for+beginners PDF link annotation
    • https://sexedevojaboto.weebly.com/uploads/1/3/2/6/132695366/zilawutakug_dadidupetitekik.pdfIn PDF document text
    • https://ninobajoxakatud.weebly.com/uploads/1/3/4/7/134702009/perudiveletu.pdfIn PDF document text
    • https://pobogovowot.weebly.com/uploads/1/3/5/3/135323888/wopuwimofaseg.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/kumasala/bayam_oru_payanam_tamil_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/83318449239.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/vidas_secas_graciliano_ramos_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/66422038154.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/atomic_structure_crossword_puzzle_wordmint_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12339626-d65a-4cc6-8c79-794c94151cd1/how_can_i_make_money_from_home_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/acids_and_bases_review_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/861a39be-9223-4939-97ed-04db64d1ddfe/sony_a3000_compatible_lenses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33894cf0-45a4-4878-9757-8693c879d5fa/resistance_band_exercises_for_chest_muscles.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/gukixameselapotupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e240670-ec37-4cea-b8bd-302f60fde9e7/lgebra_de_baldor_precio_casa_del_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/wuworonofakivumomewurusu.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/56793404613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9f0607f-3016-46f0-bb65-07a085009c0a/pidifixefidaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29eaef98-139a-453a-8b7f-f512fee4eef0/32519059505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41da0116-fe3e-4137-9112-a4e808602f0f/what_are_your_biggest_accomplishment_interview_question.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/tagirazavewikofifetapajo.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/adagio_for_strings_barber_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/coc_certificate_of_compliance_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87edad34-92a5-44ed-ae0b-652536dc2637/87983776604.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/broadsheet_adelaide_madre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c62a7967-c6ac-4e63-9375-a4615640217a/representation_cultural_representations_and_signifying_practices_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/icse_biology_class_9_book.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_off0001372c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1372C 5464 bytes
SHA-256: 1ce55f23c7e62f5ad034fca226784a6057875f05f33f5ebc963022de8ee8c5d9
font_01_sfnt_off000149a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149A9 10996 bytes
SHA-256: 702b9b0b204264e39b2b8bc83538cd8a68ee97eee9e972d8aba4cd7e58b6572f