Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1e82b4c3b85357…

MALICIOUS

PDF

80.2 KB Created: 2021-01-30 11:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1c79c15d21630299c65bc777e69637b0 SHA-1: d087ea1ee1ad9d9f2b8ca0922e35bb10ebd259e1 SHA-256: 9d1e82b4c3b8535784e3227d996df2b7a0bda92c5404634aa174916ccd1e9121
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'baarspo.ru', which is likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=kayak+dry+suit+reviews PDF link annotation
    • https://cdn.sqhk.co/mopewedote/ggeKidY/88057418442.pdfIn PDF document text
    • http://instasurprise.online/studio_24_discount_codes_for_existing_customers_20197y9o1.pdfIn PDF document text
    • http://subbellassecret.com/988749001893c12y.pdfIn PDF document text
    • http://vsspb.ru/pokirom0fg7q.pdfIn PDF document text
    • http://taptopbot.com/free_stream_overlays_templatel98ka.pdfIn PDF document text
    • http://dofuluxaruze.22web.org/aftermarket_wheels_tesla_model_3_performance.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/S2OpNjc/syrup_and_the_ultimate_sweet_achievement_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/uSTgflX/nutuvekoxasu.pdfIn PDF document text
    • http://hamsterbig.com/66393544055aon7j.pdfIn PDF document text
    • http://avbox.org/3481000802zewjr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujigivufutufu.rf.gd/poxexibu.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/23412469038.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/64509728637.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/74695759452.pdfIn PDF document text
    • http://susesibukof.epizy.com/murottal_al_waqiah_merdu.pdfIn PDF document text
    • http://fivamoxopel.epizy.com/yahoo_mail_app_android_review.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/tejirowenajik.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/2019_acc_guidelines_for_atrial_fibrillation.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/definition_nonconformity_science.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_off0000ff07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF07 5076 bytes
SHA-256: d338927e7731fca2e550b8841138f2ce05ae06cac4125cd165d1a67eb7fe256c
font_01_sfnt_off00011074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11074 10316 bytes
SHA-256: 65fa8e864da909e4a40be1c46650b3a2453f000d466234f76e2dec0866556148

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