Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4879e2b7daad259…

MALICIOUS

PDF

76.8 KB Created: 2021-03-01 12:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e3175edd9413f2079e1d71d8fef9edd8 SHA-1: 9870751ac2f7417b0451a44969f4c3519adf2f47 SHA-256: d4879e2b7daad2598e97445025aca57c54dd8121cea277d3f2ee3a905c967316
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 0.9987

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://jottigo.ru/wix?keyword=atwood+water+heater+manual PDF link annotation
    • http://formverifiedbadge.com/how_to_make_fondue_in_crock_pottfkv2.pdfIn PDF document text
    • https://cdn.sqhk.co/besuduxikuvo/6ljh2m7/mitabosolomuxowage.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/QhcHiiC/does_food_wars_use_real_recipes.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/lezerawe/50205252007.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/gtx_1650_ti_mobile_vs_gtx_970m.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/48747465502.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/mizedij.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/les_miserables_musical_album.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/wagutiwirubitowut.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24D 4968 bytes
SHA-256: bc120b2cad15bef8f5dc8a05ffa3c295b361bb351e1aa7126ed479b966665153
font_01_sfnt_off0001031a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031A 10440 bytes
SHA-256: 60bc99226048295da2581d102e8a96ed3be68977cbc2e6bd1c57bc23e118427f

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