Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7131c18ccf53ce…

MALICIOUS

PDF

65.7 KB Created: 2020-11-12 23:31:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 45bd8ee3a039abe39958cc324f090d92 SHA-1: dec0b3a455c4fc7b96fe022f668597e90a803378 SHA-256: 2d7131c18ccf53cec77d53d825f986bdef2cfb3aed2d3a8dc0d9f460ed4cf146
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 0.9998

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://trafftec.ru/123?utm_term=leon+county+clerk+of+courts+traffic+division PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420037/normal_5fa28b2178eb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_5f8b48bcaa9c0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b023880c-05e6-4f7d-b4f0-555f45b9a3d8/tusudukizerelikaman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdf0fb6a-b078-4ba7-b338-9fc346459d0a/sims_3_origin_code_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d064323-f653-497f-91e2-624672538880/22621939029.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/nupesetub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d79e872-804c-4efb-81f8-b310ca52302c/sis_homepage_somers.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/voice_zone_talking_pedometer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/palmistry_in_telugu_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/fijipu.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/finding_equivalent_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/occupational_english_test.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/tabla_de_alimentos_y_calorias.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/bioterrorism_prevention.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_off0000c3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B9 5184 bytes
SHA-256: 7b8b539afb65982b756e646ada97e4acad08e09757f0ca8718305be7bf19b6b4
font_01_sfnt_off0000d57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57F 10544 bytes
SHA-256: a40f44d068324908d704178d749c0d3397c3cc2d992262dade424d208da71d96

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