Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1176ab134fd597…

MALICIOUS

PDF

75.2 KB Created: 2020-11-18 23:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4f60cabeaa27833cffc36e8d5aaac22c SHA-1: d23e07ca5251135135afbf400e9f65b9efdf0be1 SHA-256: bd1176ab134fd5970e5bb3744786e829c49462923255787f5a89e5f5f16eb993
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 0.9999

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://trafffi.ru/123?utm_term=student+survival+guide+wsu PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461763/normal_5fa1a050b3c4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386094/normal_5fa63dd38bac4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_5fa3588a0de44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5fb04281d7ee7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5fa21e0360fdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418575/normal_5f9eade8affbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5f8a1aaa65a16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/bruce_almighty_2_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/all_the_beautiful_lies.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/types_of_flashlight_bulb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6924369f-af88-4866-82c3-00c6c8c18343/30081190621.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/38182706257.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/conductors_and_insulators_super_teacher_worksheets_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd729ca-bb50-4e7a-bee2-044959a33771/8639277177.pdfIn PDF document text
    • https://s3.amazonaws.com/kalufizefem/neolithic_age_and_paleolithic_age.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_off0000e929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 5248 bytes
SHA-256: 724703d5c3f61bf6c571f6570556d37b45adcb829a011f02aa06a7b278146b08
font_01_sfnt_off0000fb20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB20 10820 bytes
SHA-256: efbc26161b77ff4991de40514204ba7487641972f5ad88f6786359e186af0b00

Open this report in the interactive analyzer, or submit your own file for analysis.