Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0dd05413cd7568…

MALICIOUS

PDF

54.0 KB Created: 2020-10-28 16:20:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: debd74c63de73c2c9736a79cfeaa40c9 SHA-1: 1bb4b6141c9aded5484f88c8789d721d11a87cf8 SHA-256: 9b0dd05413cd7568c15581bbf75ec96df9ec7e0a70ce16b0ae7df8b2470c5fdd
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to other PDFs hosted on disposable domains, indicative of a link farm. One of the primary links, https://ggtraff.ru/strik?keyword=way+of+rift+mage+guide, is identified as a known malicious redirector. This suggests the document is designed to lead users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=way+of+rift+mage+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406501/normal_5f94858cc4c34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f88f5abe779f.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/bizav.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/divusadive.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/zomabevugeb-mavabotumozip.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/tijisozakure_kifimazufafi.pdfIn PDF document text
    • https://bakuwosir.weebly.com/uploads/1/3/0/8/130874569/nisis.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/f1d1f74a-b048-4b86-83b5-2d8084d3a7d1/ruxegasafonupakokoporu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f19448b-ef94-4b8a-bbd4-00b47237424d/86415965945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fb18283-9c63-459a-8a43-07b3ecb97c99/aidin_salih_gerC3A7ek_tC4B1p_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19060e73-9ba0-4ec7-8bb7-377c2a902255/bametin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45326604-6663-4421-aa92-c75e6a409527/jegiveluseporavegani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2a78f6d-2b35-4593-8f72-a36f7e2ac728/mamalilifov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/4048/1956/files/tofetovunoloziruzosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d484d5b5-c3fc-48a9-9341-c857e09f1e3c/rekipesukuzikabojasopub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa90a01-c53f-4e4f-bafd-cd5626abd174/temesefopexaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57a570d-7cb7-4e96-a4c6-6b74b4cbe0b8/vipavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2634/9719/files/lm_local_guide_c_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4063/5542/files/serif_webplus_x8_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90c7c2b3-4dff-48ac-ba8a-2ca099bab048/13415877702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5479cbb-616a-4db0-bfa7-dff040033af9/95244583133.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e99448f6-469c-47ea-834c-8b667761b3c0/46196374561.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_off000092d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D5 5132 bytes
SHA-256: c0433fda7fda04d5898cc75dff88c1ccb90721e2df719053416603abfaab3d40
font_01_sfnt_off0000a44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA44E 11784 bytes
SHA-256: 7bf5ab88b1399e0dd5f913807b4689e0369d6054259b1f383ed922e9b5d7bcc4