Malicious PDF — malware analysis report

Static analysis result for SHA-256 a185c20715c7d3dd…

MALICIOUS

PDF

79.7 KB Created: 2020-11-04 22:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1c78de80e7d329f362c9ea3fbadeee8f SHA-1: c2921b9093a1e34587dc1b6724d221f024833ca1 SHA-256: a185c20715c7d3dde539c10a28915df5abcc3770c28e35fc3ce3abda7a84e919
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, ggtraff.ru, which is disguised as a Pokemon guide. This suggests a phishing or malware delivery attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=pokemon+ultra+moon+complete+pokedex+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5f9b289d6842d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414159/normal_5fa2c322118a6.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/guxofenebi.pdfIn PDF document text
    • https://neriborotarisim.weebly.com/uploads/1/3/4/3/134345051/sikifokevota_tuxilibawimoxe_ligelutinogivem_berapiwupinuri.pdfIn PDF document text
    • https://mikudone.weebly.com/uploads/1/3/4/3/134370159/kufowamu.pdfIn PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/pobirewikeko-wulamejetelino-lebuge-xerenu.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/cb04242a-cd46-4d51-adfd-a7ddfbcb80d2/45469908123.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/85368020047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f1ef7da-8b33-46bb-8538-4e78e26a2b84/wazogefelate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5db9a92-fdbf-4f26-a616-5612c0940b0a/89719767774.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/wagelave.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_off0000f77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77F 5348 bytes
SHA-256: 7e4f06411bc2ee8afcb84a5ca7fc0efa3e4a682963859f2a1f66fae2b2e2049d
font_01_sfnt_off000109a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A4 12768 bytes
SHA-256: 72cc15890fdf22abad637c42fbb0c1e1459d0322059fb40df7f564ba80283674