Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20b0a02e98ff246…

MALICIOUS

PDF

74.7 KB Created: 2021-05-05 17:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ca7b68252ff9096124eeb644e360177e SHA-1: 63f555ec1cced962a0f0eef2dcb39940fac713fa SHA-256: d20b0a02e98ff2460cd9c084409b2e5904270ca05ec24bd0e51ddc2c0ab16444
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a spearphishing attachment designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://midufefew.ru/strik?utm_term=honda+harmony+1011+bagger+parts PDF link annotation
    • http://fonujameritules.getenjoyment.net/xanotarevibalarupowe.pdfIn PDF document text
    • http://jirusulixozome.scienceontheweb.net/how_to_solve_a_rubix_cube_step_by_step_algorithms.pdfIn PDF document text
    • http://xeberok.getenjoyment.net/xefejakego.pdfIn PDF document text
    • http://rikafitamedad.medianewsonline.com/fupoguluvulu.pdfIn PDF document text
    • http://tanemazijafawin.medianewsonline.com/kamekemuwilokigine.pdfIn PDF document text
    • http://xuxodowenam.getenjoyment.net/32519799249.pdfIn PDF document text
    • http://zatakifi.22web.org/how_to_cbt_for_ocd.pdfIn PDF document text
    • http://memisada.mygamesonline.org/2245683502.pdfIn PDF document text
    • http://xazirinid.iblogger.org/histologia_del_aparato_reproductor_masculino.pdfIn PDF document text
    • http://galajanexagaj.iblogger.org/verizon_fios_quantum_gateway_firmware_update.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_9b587047c3c9464989aff9098354c567.pdf?index=trueIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_b91aad1a8bc2437098f2cb9a7eeff8f5.pdf?index=trueIn PDF document text
    • http://vigiraporonom.rf.gd/what_is_green_slang_for.pdfIn PDF document text
    • http://tuxefefili.epizy.com/fekaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/749a5683-1a7d-4e97-8572-1ffcf0b5c40c/acer_laptop_battery_price_in_sri_lanka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca232a3-8ef9-44ea-bc2c-85ad1fbd7407/how_to_install_netgear_n300_wireless_usb_adapter_without_cd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c060b060-f780-4157-94cd-d34e66fb1aca/75737017686.pdfIn PDF document text
    • http://xewojof.rf.gd/67907818642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cc689a-2b35-4548-8c48-cd6f44ea194e/lenovo_t510_arbeitsspeicher_wechseln.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b7c127-ae0c-43ed-a301-1cc1ff9993ab/mophie_juice_pack_manual_iphone_6.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/56400418141.pdfIn PDF document text
    • http://jidapemoti.epizy.com/4th_grade_math_multiplication.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_off0000e5e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E4 5740 bytes
SHA-256: 1490a39aecbee5c5dcde95f0796bfa2a91585d3568f8d6354870bb2a1344c5da
font_01_sfnt_off0000f942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF942 10612 bytes
SHA-256: cec4368613df60006f2b23888a811db681cd0f450832b1d5763381e1b25e0ff9

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