Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2430d55cce7c74…

MALICIOUS

PDF

69.7 KB Created: 2021-02-23 01:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b42c0faba0a1cf808fa836c923d13c27 SHA-1: aa1e094cbe92d5ef35f6536a80005a76ffc839be SHA-256: fe2430d55cce7c74bb89c5bc16445b01a0b29b6dbecfefe518a3aae3da8fdbe5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://bologen.ru/wix?keyword=blue+strawberry+by+the+sea PDF link annotation
    • https://cdn.sqhk.co/bezofusipow/Rhdgeps/surofidasogamuxidobivubil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408476/normal_5fda3cd4e3469.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/jcjddUr/mesopexosidirejaxupaju.pdfIn PDF document text
    • https://cdn.sqhk.co/xoresarib/HSlAggb/gugenalir.pdfIn PDF document text
    • https://pedexanagokol.weebly.com/uploads/1/3/4/6/134635549/totav.pdfIn PDF document text
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/nuzuzime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419857/normal_5ffbad3345f9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420441/normal_5fe3d51712246.pdfIn PDF document text
    • http://femusawar.iblogger.org/26871393550.pdfIn PDF document text
    • https://favonewe.weebly.com/uploads/1/3/2/6/132695639/sixilidufu-tuvupule-nuwapifazisotev-rutipopi.pdfIn PDF document text
    • https://bukusafirede.weebly.com/uploads/1/3/4/2/134266240/3a01bb149.pdfIn PDF document text
    • https://cdn.sqhk.co/sutadejuna/gVrtS6H/fokovijuvomeb.pdfIn PDF document text
    • https://fozijiruzixusap.weebly.com/uploads/1/3/4/3/134317533/vufojo_tatutunanitil.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/xgh1swu/20690268240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476001/normal_602a1cb9c9ab7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416504/normal_5ff58c15d48c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sipujajawe.epizy.com/agricultural_economics_agrimoon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC301 4776 bytes
SHA-256: 90294ec744bc566af0102904178eeb5045d58fd1a633c6918c3ef386c9eb65fc
font_01_sfnt_off0000d362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD362 12524 bytes
SHA-256: 1ce82af84a5ee8804e94a9d6e79498528d90cc9589c813d8d975fb028e224a01
font_02_sfnt_off0000fb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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