Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0ee55fce582dd5…

MALICIOUS

PDF

49.5 KB Created: 2020-10-16 09:45:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: f52cc3a0d0c04517a74b774639e50cbb SHA-1: 16baa3d99c729139c8b45ee3fcac0f4f519f0921 SHA-256: de0ee55fce582dd56daa954d34c65b856ec03d1cd2d2832fab6e2c3b3950f3fa
184 Risk Score

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://ttraff.cc/pify?keyword=supersu+pro+apk+appvn In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_5f87ae51607e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5f89231e22521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5f88c0cd9dec8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f875b277e35f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f893a8c98e10.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/wurowuwo-badini.pdfIn PDF document text
    • https://waniremupamed.weebly.com/uploads/1/3/1/4/131407535/motugilelil_nuruzakinud_wogifemom.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/a7516413002985d.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/d7f4af5c1efb.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/zezavuwonenuno-vipabagatopo.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/8b7c60f3d.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/1564899.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dolopitubolagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/finomaxotibekufezuvonufaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3882/2559/files/adventure_game_studio_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9912/6437/files/85552869628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1402/1030/files/metu_neter_vol_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/5897/4886/files/watoluxenewidujewupava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7940/4194/files/sibokudavuxutil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3298396-77c1-47bd-abe1-7570f2aac9da/bekiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03aa63e1-b470-434b-a728-fa22fa196a10/palamozawipiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bef3086d-d99c-424b-8fc1-959c6e83d1c5/69274763246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9fc4e86-778c-46e1-ac41-0db1b859d0ad/23508970401.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc2754bc-9377-4653-8932-d239a2653c45/48872490596.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_off00007b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B58 5008 bytes
SHA-256: 817f6553e72a7a1d3348f88b57203eac9f2a5be2eda9b75e993ca87a8eb10731
font_01_sfnt_off00008c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C75 13568 bytes
SHA-256: 4b0f465427a25120ea475347eb64be08c8cab9c555f3dceb2c1b80dc01c181ad