Malicious PDF — malware analysis report

Static analysis result for SHA-256 dace5946f60bdf3c…

MALICIOUS

PDF

76.1 KB Created: 2021-02-13 13:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ffffc95aa86861a606147d27b4b2b764 SHA-1: 205bf0036a1181bec445665c424bd7f8d239a3a1 SHA-256: dace5946f60bdf3ceb97db1733406e9249a8875c1f251787401f31a179411ae4
154 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. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=ecgs+made+easy+barbara+aehlert+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4482191/normal_5ff1bf43f3d35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426812/normal_6003f95609751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_5fd3770f49c9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418013/normal_600d6a7195be0.pdfIn PDF document text
    • http://bonus332.site/seneca_on_the_shortness_of_life3yyy2.pdfIn PDF document text
    • http://cookwellbakewell.com/minecraft_creeper_pumpkin_templatem47eg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://potubavaziripek.epizy.com/peptic_ulcer_treatment_nice_guidelines.pdfIn PDF document text
    • http://divejekojo.epizy.com/valasulitilaxoxipejenoko.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/guidelines_for_anticoagulation_for_pulmonary_embolism.pdfIn PDF document text
    • http://nikonujilo.epizy.com/13711925718.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/xegiwigajiwenifugib.pdfIn PDF document text
    • http://gufesabil.rf.gd/94579825171.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/bebow.pdfIn PDF document text
    • http://tijiwef.epizy.com/north_america_map.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/tamil_audios_music_song_s.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/coco_remember_me_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/pemopimaboseb.pdfIn PDF document text
    • http://suginuzebaluwom.rf.gd/16133543586.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE031 5292 bytes
SHA-256: 37930737990e78ba547f4ed032e4d6890ce6395eb30522557af79d57c6d58406
font_01_sfnt_off0000f231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF231 10240 bytes
SHA-256: 6db83cf29d27ef9bf8efd27054f510048b13382ef848a6f546c4f2c2e051c7d1
font_02_sfnt_off0001154d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1154D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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