Malicious PDF — malware analysis report

Static analysis result for SHA-256 5daf1ed6594e475b…

MALICIOUS

PDF

70.9 KB Created: 2021-02-11 21:09:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 144757979d59f1c28aeda8f495e60cac SHA-1: e42bb48da7c7a5afaf9a67f456428454844a1c97 SHA-256: 5daf1ed6594e475b8d59a88763b38fe458ddf99430259afa4b61a9cce9b90ab2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI that directs users to a website offering a modded Android application, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external URIs suggests the document is designed to redirect users to a malicious site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=btd+battles+mod+apk+android+1 PDF link annotation
    • http://samozanyat.info/effective_communication_skillsvnr19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_5fe7f0c659b78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370063/normal_5fc5c574cd7ab.pdfIn PDF document text
    • http://dithetsen.xyz/migibc8zta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496001/normal_601da11ec0ae3.pdfIn PDF document text
    • http://tophomework.space/blanch_condensed_light_font_freek4sfn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417817/normal_601b229ad3e64.pdfIn PDF document text
    • http://bigowet.xyz/due_diligence_report_format_rbiqe5ew.pdfIn PDF document text
    • http://idealica-italiaoficial.site/the_elephant_in_the_village_of_the_blind9cloy.pdfIn PDF document text
    • http://vbruti.site/nobitewfc1s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472775/normal_5fffb4b646abb.pdfIn PDF document text
    • http://helplnstagram-confirm.com/112303424530ks8m.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/turip/free_blank_photo_card_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/zebovezejuwinividazi.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/wineteraledekijipesoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/gidikagugakuxasizoduvet.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/atal_bihari_vajpayee_kavita.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/camscanner_android_free.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_off0000d85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85F 5412 bytes
SHA-256: 20f4ac04b129982a4deea0378ae344b6881240e8efde185c35812520bbb0afb7
font_01_sfnt_off0000eaad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAD 10380 bytes
SHA-256: 368ea499e58d329b5f61762a2eea2e3e8199374ef1fedf949056b1310a132cf5

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