Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef97524d2d95c1e…

MALICIOUS

PDF

105.7 KB Created: 2021-02-21 16:49:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 15e4783c452b35376db8ce1d9eb27633 SHA-1: b8c1c702d32f853e6bc6d5656d7faa41d044e090 SHA-256: cef97524d2d95c1eeefa9dea2587c6334ef9c7ea81e7053c26556b84653f5871
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=what+are+the+best+games+to+play+while+high PDF link annotation
    • https://cdn.sqhk.co/fafujedajir/jVijAgf/spacex_starhopper_test_launch.pdfIn PDF document text
    • http://fivabigenarewo.22web.org/6347470588.pdfIn PDF document text
    • http://mujojodisi.22web.org/33003369392.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/wJ5haic/emergency_sound_effects.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/grc065u/basic_marketing_plan_template.pdfIn PDF document text
    • http://nimened.66ghz.com/naxegelu.pdfIn PDF document text
    • https://cdn.sqhk.co/gadowikuxe/hJhghbQ/bmx_boy_bikes_for_sale.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
    • https://s3.amazonaws.com/punurum/437675770.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/brach_s_candy_corn_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/android_broken_screen_data_recovery_locked.pdfIn PDF document text
    • http://vinuvomitatu.epizy.com/79105694465.pdfIn PDF document text
    • http://kaxixuzebupajal.epizy.com/free_after_effect_template_intro_logo.pdfIn PDF document text
    • http://tuzugewidided.rf.gd/90564616857.pdfIn PDF document text
    • http://jatirud.rf.gd/56854289620.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/defender_of_the_crown.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/44744536775.pdfIn PDF document text
    • http://golujaxi.epizy.com/74435315784.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/format_json_sublime_text_2.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/1971602661.pdfIn PDF document text
    • http://nosekaj.epizy.com/cash_flow_template_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/pitepukenebomuwimirize.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_off00015248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15248 5264 bytes
SHA-256: 20dde03e920a246c1282be1b9d17b222f14381ec9975832df04d865f1976a371
font_01_sfnt_off00016442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16442 11252 bytes
SHA-256: eeb09bf3bdceeb6560625474315bc1121c751c2027ca0e4542bb9d67b6bf2a69
font_02_sfnt_off00018a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A93 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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