Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac95b3a87ae3ffa7…

MALICIOUS

PDF

33.1 KB Created: 2020-11-08 09:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 86a063919c2be7c9314f47e5beb2bfc8 SHA-1: d7b1ba486cf61b1bbf4340115eb3a35f16130131 SHA-256: ac95b3a87ae3ffa7c18aed9c4bba1cf8d63b320bb5acbf534a2654996df6e610
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, https://ggtraff.ru/123?keyword=ikea+minde+mirror+instructions, is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?keyword=ikea+minde+mirror+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4474999/normal_5fa4bff954222.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_5f9e41528a502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5f8fb1ab9c5e5.pdfIn PDF document text
    • https://sajenaviwabawi.weebly.com/uploads/1/3/4/2/134266368/7956708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f883d8a627dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479460/normal_5fa76d6ba93b2.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/zafaronivaj/cracked_apk_mods_bluestacks.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/zasofunubebafaf.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/kelaworekazozat.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/curso_catia_damasceno.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/mlb_all_star_game_tickets_2020_price.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/schematica_minecraft_house.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_off0000448a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x448A 5052 bytes
SHA-256: 0b1e5e77597a5a4ad6603e8adf625d90f057c4d35fb938d487e00aa50d71e398
font_01_sfnt_off000055a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A4 10156 bytes
SHA-256: ff0359df8193e98b2dd3d59e7c727b93b2c7f665314dab2569d943ca89726075