Malicious PDF — malware analysis report

Static analysis result for SHA-256 a422af91595ae32b…

MALICIOUS

PDF

76.2 KB Created: 2021-03-07 07:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2ebc085c1a50c491ee093fdd7113c237 SHA-1: 3bdd684ca24bf7b4238a1e209a79a936eb2273db SHA-256: a422af91595ae32bce90d2873904f42da90ee667a26a7cab044240294e6cd3c9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://botokaw.ru/aws?utm_term=how+much+can+a+2010+lexus+rx+350+tow PDF link annotation
    • http://xepusuxewo.iblogger.org/denon_avr-3808_ci_7.1_av_surround_sound_receiver.pdfIn PDF document text
    • http://dasiwujupuna.sportsontheweb.net/15846372073.pdfIn PDF document text
    • http://rumigiwataj.getenjoyment.net/free_carry_on_bag_size_spirit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485822/normal_5ff06cfd5a5e1.pdfIn PDF document text
    • http://bejisosubonito.sportsontheweb.net/74821648170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417327/normal_601b27565da8c.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/where_can_i_find_republic_of_tea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sevoga/persona_5_max_confidant_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/aha_cardiopulmonary_resuscitation_guidelines.pdfIn PDF document text
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_0a1f65c819394c59930655360ad7e97f.pdf?index=trueIn PDF document text
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_28db72e5a2b24e628805e84f21a9e647.pdf?index=trueIn PDF document text
    • https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_7e2c717f3e4b41ebab2782120bd2e497.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/040fec69-15ac-4929-a767-eacfc718fac4/82830193607.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/35397402986.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/fimizubixir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c20d593-1691-4126-8e58-a0944885ed36/dks_model_1812_manual.pdfIn PDF document text
    • http://fopalemominito.epizy.com/digital_camera_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/2018_calendar_template_australia_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e08f7b-e5fa-4b40-a93f-9b1ef2c5f132/kigobowapiret.pdfIn PDF document text
    • http://poxemibusap.epizy.com/crystal_grid_template_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc4a6936-61c3-49e5-8163-bfd2813df8be/11191219357.pdfIn PDF document text
    • http://dufijofitaj.epizy.com/bose_wireless_noise_cancelling_headphones_manual.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_off0000dc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7C 5608 bytes
SHA-256: bff8dc52d5ad54d612e4179abef8cbbbcbba8ab9099e67ab3f902d20653445e3
font_01_sfnt_off0000ef7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7C 11052 bytes
SHA-256: 1f603b76b23bb26e2dbe475b0953025cee07227b4f2abec93a656b223f871eae
font_02_sfnt_off00011545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11545 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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