Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ebe11542e54da4…

MALICIOUS

PDF

72.5 KB Created: 2021-05-16 05:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1a8253fd5eedd37a9a26d1aee1a23909 SHA-1: 7beeede8297f8abed0cbbb638dae2b7b4f2391bd SHA-256: 04ebe11542e54da453246636a4ae42081436c3a706437bf885bcfae4a9e7f493
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in callback phishing and tech-support scams. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to deliver a malicious payload or redirect the user to a phishing site.

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://gimoguvi.ru/strik?utm_term=fargo+hdp5000+ribbon+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369324/normal_604ddc99ca264.pdfIn PDF document text
    • http://graatorama.space/kenejepimorinilebomutejiwkgxv6.pdfIn PDF document text
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/mudoliwakafuwak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473638/normal_5ffe46175a691.pdfIn PDF document text
    • http://wumofuzusagumo.22web.org/1-100_multiplication_chart.pdfIn PDF document text
    • http://drive4mclaneaustell.com/43529480905vi32e.pdfIn PDF document text
    • http://magic-world.site/zegavejifoxudev14cac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415950/normal_5fe43770a1857.pdfIn PDF document text
    • https://wesoxuzepa.weebly.com/uploads/1/3/4/3/134372623/585f9eafaef190a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495042/normal_605bf541d4bf6.pdfIn PDF document text
    • http://edalovert.xyz/36671554297r14we.pdfIn PDF document text
    • http://balifruit.com/division_worksheets_grade_4_free80qzb.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/wusigipufuvowix/lightroom_presets_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/kigudonazebi.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/ifixit_iphone_6_screen_guide.pdfIn PDF document text
    • http://satanomoxa.rf.gd/minecraft_1._8_free_pc_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/five_sermons_in_matthew.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/tokipikowirixakago.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/hyperbola_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/26674157375.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_off0000d502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD502 5488 bytes
SHA-256: d7932c255f8258e7db21253f799bdaefd5a3f5912fad0e801c7427027a41a11b
font_01_sfnt_off0000e7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A1 13772 bytes
SHA-256: eeb0b66cb7ea1ff4c0771163536bde4f7f887baab2b0d23f7df155fcbadfc481

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