Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb18ff8af7a5223…

MALICIOUS

PDF

77.4 KB Created: 2021-04-18 02:35:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d835e1751426e33f004e03d4088198e1 SHA-1: 10f006af552df25e4931863e5780aadce30a3205 SHA-256: edb18ff8af7a5223b5956f0cd5a385ebbcefc96584d5d0f5802b14c5142cab42
116 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. It uses a callback-phone (TOAD) lure. 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 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://midufefew.ru/strik?utm_term=stryker+stretcher+caster+wheels PDF link annotation
    • http://wenonize.22web.org/the_structure_of_empirical_knowledge.pdfIn PDF document text
    • http://blognews.top/brian_mcknight_marry_your_daughterh6chz.pdfIn PDF document text
    • http://piredvizhnik.com/grade_10_chemistry_test_with_answerssjzyk.pdfIn PDF document text
    • http://gopubewigofopa.iblogger.org/desired_capabilities_in_appium_android.pdfIn PDF document text
    • http://pitushok.space/392305150424xllm.pdfIn PDF document text
    • http://pasetbs.xyz/endura_mt500_overshoes_size_guide0kp26.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/0ZZjbhi/nibuwuba.pdfIn PDF document text
    • http://sewakasatixori.medianewsonline.com/gutuwitufatasadufifado.pdfIn PDF document text
    • http://ipoteka.net/tapamemizekomolapemexekaocfq.pdfIn PDF document text
    • http://cherrypimp.online/vubudotipuxon00y0.pdfIn PDF document text
    • https://cdn.sqhk.co/digusamixi/OjfcWLA/febrile_neutropenia_guideline_2017.pdfIn PDF document text
    • http://subbellassecret.com/sodastream_refill_price_big_wqxl1l.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/likadojivivofu/printable_maths_worksheets_year_10.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/7833697610.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/2008_cbr1000rr_owners_manual.pdfIn PDF document text
    • http://nuzavaxevarap.epizy.com/70263277505.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/68505180426.pdfIn PDF document text
    • http://piwolimosopobu.myartsonline.com/46835149499.pdfIn PDF document text
    • http://rivebop.epizy.com/knight_age_online_farming_guide.pdfIn PDF document text
    • http://bufolezipozazom.epizy.com/fiebre_aftosa_humana.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_off0000e254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE254 4772 bytes
SHA-256: 6942537412ed09604c9d907c95ea3455e3797626178271a8be6d2fd3cb3cbe41
font_01_sfnt_off0000f2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AE 11132 bytes
SHA-256: 113b41361b5fda4434bfe78e19c9e197e0a452214f641632148c483debb73c49
font_02_sfnt_off000118b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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