Malicious PDF — malware analysis report

Static analysis result for SHA-256 af4a96c57d030856…

MALICIOUS

PDF

238.2 KB Created: 2021-03-30 22:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a212b2e266bfffbde15ca11e16d1cf0c SHA-1: 59526cd8b963e3afbdf3e3f891f6a2b214f5abaa SHA-256: af4a96c57d03085623de6579d5fcde8a5cf56c91041b69056b97fe8bf335b162
136 Risk Score

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9834

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://zajinet.ru/wix?keyword=a+love+to+last+april+7th PDF link annotation
    • http://securitycheckingbrowservkcom.xyz/85647316052nkazn.pdfIn PDF document text
    • http://baxebeteziwetu.iblogger.org/cursos_de_ingles_gratis_en_dallas_texas.pdfIn PDF document text
    • http://francobusiness.com/harga_tv_led_panasonic_viera_42_inch_di_medan827lz.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/raximi.pdfIn PDF document text
    • https://gupovokezatiku.weebly.com/uploads/1/3/4/8/134878629/moxuwi-lodaxoxa-nutukagizulasef-jemivenokabibor.pdfIn PDF document text
    • http://lnstagrambusiness.com/carly_rae_jepsen_emotion_album_zipadml6.pdfIn PDF document text
    • http://storeyou.store/17293122100e0iul.pdfIn PDF document text
    • http://storezone.info/20275463918yrx7e.pdfIn PDF document text
    • https://wukarogokemek.weebly.com/uploads/1/3/0/7/130739107/8159219.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://45b0b119-5f8c-43e7-b437-4e12d17c1c81.filesusr.com/ugd/3826db_cfdbb923f474477297c8a0ba53110012.pdf?index=trueIn PDF document text
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_46c71db40ddc459f81f7d7f07e47ac60.pdf?index=trueIn PDF document text
    • https://67dbe094-6b68-4a2c-870f-9bd980043d88.filesusr.com/ugd/cff74a_455dc5ac243f46df953804c2cbc62ab0.pdf?index=trueIn PDF document text
    • https://b5d51143-f34a-4a4f-9265-6917490cb775.filesusr.com/ugd/9f69bd_4867e6da8af643048ca503d5808f20f6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/41841642641.pdfIn PDF document text
    • https://2ddf8be6-044d-4f30-b6fd-16c032829cd6.filesusr.com/ugd/9827ea_f2ac4704032c4fc283d4ef618cade077.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jovekus/pokiv.pdfIn PDF document text
    • https://a79fbd7c-12a6-44fe-9d3c-43dc2b0795a8.filesusr.com/ugd/f95141_01975a2da5e94119839b4025e0ccdecc.pdf?index=trueIn PDF document text
    • http://vofolosozoz.epizy.com/70764625451.pdfIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_550f42a67f314ef1b3ef7cc0f00301b2.pdf?index=trueIn PDF document text
    • https://b64dd490-e5b9-492f-89ff-e398ecee904c.filesusr.com/ugd/5926b4_01d92b25d3c24035aa96832bd4460dfa.pdf?index=trueIn PDF document text
    • http://xulitapaxi.rf.gd/safety_not_guaranteed_movie_ending.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/88591968786.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00012afd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12AFD 193348 bytes
SHA-256: 7febcc423861a47b347992c513301f0744ee58d7e7970a587348da0f14fc841c
font_01_sfnt_off00035e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E52 5036 bytes
SHA-256: 3197a6c759b58f95cddf51992f2b7a6ef7ebee08faf5dd690f8724a5a3dbf76e
font_02_sfnt_off00036f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36F7B 10956 bytes
SHA-256: 33477104fd621b1f36cd31b9204f43a493c497a23aa5473fa5b3969f74d44bfc
font_03_sfnt_off0003950f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3950F 16204 bytes
SHA-256: abfd345a6ea1e62b83e5b81470e97c0bb38d81b9d626d8407e597eb2d2192f0c

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