Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e34a7187c79220…

MALICIOUS

PDF

77.5 KB Created: 2021-03-16 01:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 575910fb684b626c667eb973e262dbbc SHA-1: b63dea7a671fe56d67aa86093f53000a466f9e11 SHA-256: 69e34a7187c79220423e3e9224b8a836d6ae0967afa309952e94f9df62181d89
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a site that appears to be a keyword-based redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to generate traffic or distribute content. ClamAV detection and ML classification confirm the malicious nature of the file, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/wix?keyword=fullmetal+alchemist+manga+pdf+mega PDF link annotation
    • http://rukozhop-guide.com/98858847280s812g.pdfIn PDF document text
    • http://mmuuue.space/kidataxukuzogokafesu426t8.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/mojudalemegiruvu.pdfIn PDF document text
    • http://muldwych.com/65901365434amhrc.pdfIn PDF document text
    • http://prizinsta.online/nozetarogizutikuxinadep7nus.pdfIn PDF document text
    • http://prostochillforum.fun/voice_recording_software_for_ubuntuhuw66.pdfIn PDF document text
    • http://naturapple.space/logitech_ipad_keyboard_keys_not_workingonc51.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/jagux/california_real_estate_rental_agreement.pdfIn PDF document text
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_eb120eea4d184bf4b1a14a2e64bd73e8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xesigeze/aararum_manasil_ninnorikkalum_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/housemate_cleaning_roster_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/viwew.pdfIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_59f45e99f43a44128e3d0aaa9cf88385.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/gavomitepoxomumap.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/79497479175.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/52957030188.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/how_to_be_a_great_public_relations_officer.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/4674923896.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/briquetting_of_coal.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_off0000d9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D6 5316 bytes
SHA-256: 853f478c2a480e3817b79291387f98949071544dc86a385878c9524e95b24093
font_01_sfnt_off0000ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 5428 bytes
SHA-256: 9229ef7e791b743b4278f251c705fb3fb704cc0779970afdb6ef7bba4e77b8d2
font_02_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 13140 bytes
SHA-256: 3da3254adde71ed040e7e13be765a5a2c919b09061f2811c68dcf601ce82acd1

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