Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5bbc59d6ddcf56d…

MALICIOUS

PDF

74.8 KB Created: 2020-12-25 00:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 05e0bdbeb137bcc3cceea553fc60bb45 SHA-1: 151b21cb002fd8a38cd5cc163068ecda27a17051 SHA-256: a5bbc59d6ddcf56d4e116154403192826b800f06b646aba60fabc830eafdb026
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, suggesting an attempt to manipulate search engine results or redirect users to malicious sites. ClamAV also detected this file as Pdf.Phishing.Trojan.

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://trafffi.ru/aws?utm_term=alan+walker+lily+piano+sheet PDF link annotation
    • https://cdn.sqhk.co/kizewetete/dZhbtgi/zombie_face_stickers.pdfIn PDF document text
    • https://cdn.sqhk.co/bitubebo/2ijexgu/setusefonaxif.pdfIn PDF document text
    • https://rugalasaludazi.weebly.com/uploads/1/3/4/6/134683923/3159c47.pdfIn PDF document text
    • https://rusofejez.weebly.com/uploads/1/3/1/8/131856127/9029117.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ce2e70c-13f4-4d26-8328-7cb8f828406a/baguwurikixelaxopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3634fa-846b-409b-ba38-69d427cf7fae/social_media_marketing_courses_with_certificates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f2ce473-bb19-4903-a002-1ecd2134299e/the_braggart_soldier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/678ded74-0f10-4a8b-9466-a758084f84fe/johnson_funeral_home_thief_river_falls_mn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b41ec7-1d68-4cc9-98a6-14f9c5831800/netimezokuretez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff6af9d7-4de5-4fba-9f29-176eba494e2a/wiz_khalifa_booking_agent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfcb2de2-0bbc-4b64-a00f-b001579afc68/10354626257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2553c4fc-30f3-4706-a646-1c56419c3c31/etched_in_sand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a2320fd-f9dc-4026-ac39-80a6196c5fd2/96091525140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87b3d624-6188-443e-9b58-a40fe72d823e/a_year_in_provence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b312a3b2-24a6-4e9e-82e7-ff1b66fc7dbe/13778441850.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_off0000e3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C8 5152 bytes
SHA-256: f0edf8149c72618e95ec5a62b4635ca26a6c2f628afc032f920c4b8fc68fcb8b
font_01_sfnt_off0000f561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF561 12668 bytes
SHA-256: 313c1605943ecd7c2fbce07b1e842e2745f301a2cb11c5ad3ab0414408ed1093

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