Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb654a0656d62d12…

MALICIOUS

PDF

194.8 KB Created: 2021-05-11 08:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e70e25131b381f2b4215e5e912635979 SHA-1: 9bebb91bf01f290e1fe7c9ee187ab916d472d367 SHA-256: cb654a0656d62d122a0ef528e0d1c1f0a97aad6e6866a495a70ef3b4d66b128c
116 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9977

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=does+directv+have+game+show+network PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488116/normal_6021960571aea.pdfIn PDF document text
    • http://lasabobobatir.22web.org/aspek_sumber_daya_manusia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473903/normal_5fe2571779243.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/departmental_accounting_questions_and_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gejamuromina.rf.gd/78905212202.pdfIn PDF document text
    • http://temekem.epizy.com/74120413312.pdfIn PDF document text
    • http://xologikaju.atwebpages.com/kexizobisuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad924e59-c6a5-4d00-9cec-b1dc7e60533d/central_vs_peripheral_vertigo_physical_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/51736374863.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/fibegedegutesokozi.pdfIn PDF document text
    • http://ravuxigud.epizy.com/los_verbos_regulares_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/what_are_your_career_aspirations_sample_answers.pdfIn PDF document text
    • http://junedujivoxoz.epizy.com/free_cover_letter_templates_for_internships.pdfIn PDF document text
    • http://jemuxopirale.rf.gd/focusrite_control_2.3.2_download_iso.pdfIn PDF document text
    • http://sagoralezerelo.onlinewebshop.net/vuvetotasuko.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/fantastic_beasts_and_where_to_find_them_funko_pop_list.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/misazuwipivimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dd11808-dcbf-4631-957c-deca752d5006/98380609530.pdfIn PDF document text
    • http://mutojux.epizy.com/bolise.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000287d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x287D1 4652 bytes
SHA-256: 9f6aa39173d2c196dfe523d561c9f0b07bc1dfbb850da4eb67219e5ff42e8503
font_01_sfnt_off0002987c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2987C 5536 bytes
SHA-256: 394b6013f5cfea82bca20648af4dfc3d7c6603baaa33fd093fba0a6de2711724
font_02_sfnt_off0002ab3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB3A 4568 bytes
SHA-256: 099a64165b2b76284c2b081e3bca5171ef6d30aa8252077de10d8a532d747fd6
font_03_sfnt_off0002b851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B851 14908 bytes
SHA-256: a42da1a1ac7c982d8a20b9da2396ba7f5586058c0c1262a8e1de4c298b33aaab
font_04_sfnt_off0002e76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E76F 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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