Malicious PDF — malware analysis report

Static analysis result for SHA-256 a983bd77792cddcb…

MALICIOUS

PDF

71.1 KB Created: 2021-02-12 17:37:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b1390bea523d554b199a28797abad1ea SHA-1: 72611ca5ed7d63a0bab7996c6e4d676b1ae1b310 SHA-256: a983bd77792cddcb02149d954fcc231cb1b4d94e94b76ea7a38b4f85225bb5b4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://jottigo.ru/wix?keyword=noisy+boy+firework PDF link annotation
    • http://wurigakisedepov.iblogger.org/popuzegifubezibigo.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/tjbibgg/64935523186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_6020131fac9a4.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/dBNhgla/fawidenevibemiwopule.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/ihjdhfC/fakugewufazemikopa.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/gfiflCe/15197087504.pdfIn PDF document text
    • https://cdn.sqhk.co/linigurep/jNtUgc9/66903907776.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/Sihheez/kibuzez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422136/normal_5fcedecaea0f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_600c2409d3a82.pdfIn PDF document text
    • http://duboxol.iblogger.org/pusevojibujuputemune.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/iiDgdig/65097806759.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482190/normal_5fdfd66d483f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_6015c99151936.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/toliwudalamem/este_largo_camino_atahualpa_yupanqui.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/free_consulting_contract_template_canada.pdfIn PDF document text
    • http://rupeguv.epizy.com/asphalt_9_legends_information.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/liwavovekegenaw.pdfIn PDF document text
    • http://bolutiso.epizy.com/dadododagenirevezafeje.pdfIn PDF document text
    • http://bosadubarelazu.rf.gd/chief_architect_premier_x10_library_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/knust_admission_forms_for_2019_20.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_off0000dba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA2 4884 bytes
SHA-256: 146bcfd23edfb550a40dd9874c2062b822cc54fd6c0a950a8c1205c8c6aec13b
font_01_sfnt_off0000ec72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC72 10184 bytes
SHA-256: 93a97259cae0358f56ae408ef453e032a484c20d015a4b810762b059903a6f42

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