Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e7d5a6e1ae0a1b…

MALICIOUS

PDF

78.1 KB Created: 2021-03-15 23:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f694003b6e85f8d1f3b18212002c9311 SHA-1: 9e79820c6184d1e23e947f9b8eef76fd09f42c56 SHA-256: 07e7d5a6e1ae0a1b0bf781ca9136a20487037718dd3d80c6ee0ee6535d7226dd
156 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 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 0.9997

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://leonvi.ru/strik?utm_term=ue+boom+speaker+vs+jbl PDF link annotation
    • https://rafunipigadim.weebly.com/uploads/1/3/1/3/131380466/643accb10bfe0.pdfIn PDF document text
    • http://qwonder.space/simple_modern_house_bloxburgoqr6s.pdfIn PDF document text
    • http://studytogether.fun/onmyoji_arena_guide_apkm5n7g.pdfIn PDF document text
    • http://girlsbeach.space/27093743012ghrd9.pdfIn PDF document text
    • https://kokesekodabese.weebly.com/uploads/1/3/4/0/134012443/bilezuxedotupe-ditubesowe.pdfIn PDF document text
    • http://orbitan.fun/jio_video_call_apk_puree8y9v.pdfIn PDF document text
    • https://suruwizad.weebly.com/uploads/1/3/4/7/134766156/2621423.pdfIn PDF document text
    • https://cdn.sqhk.co/pulovafafita/knFgh00/tik_tok_viral_status_video_download_market.pdfIn PDF document text
    • https://cdn.sqhk.co/ziloteduxemo/J3Ahag7/bhagavad_gita_telugu_translation.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeforms.com/3682120536861ppv.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/sizabo/oxford_collocation_dictionary_apk_cracked.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/tratamiento_ataxia_cerebelosa.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/the_five_love_languages_gary_chapman_goodreads.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/timestamp_to_date_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/52293653540.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/installation_and_commissioning_report_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c091b3-6c1b-403c-80dd-a1148cda27bf/vitamix_5200_blender_pitcher.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/49895773305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f0b9da-85e1-4688-9166-5c9469b93ce6/72288523235.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/71460588681.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/how_to_unlock_door_on_kenmore_washer.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_off0000f417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF417 5296 bytes
SHA-256: b3254ba3d59f6e0d14c2b9fbcdaf180599f648e30e708b65b475863a01dd0d4c
font_01_sfnt_off0001060d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060D 10840 bytes
SHA-256: f2421c14bd54a4f9fd897b12fb0bf59468957b15066abb6d02793267da4236ad