Malicious PDF — malware analysis report

Static analysis result for SHA-256 df84b71bdbd8fd95…

MALICIOUS

PDF

81.9 KB Created: 2020-11-19 17:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9d3d66f0aaf5690f2702e2562d38e161 SHA-1: 1155147dc470c055f471c778508811f2122ce861 SHA-256: df84b71bdbd8fd954c630da057f83324e07473e6fe59fb5d490529342fa37d5b
96 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 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 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/123?utm_term=ark+exceptional+kibble+tames PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383586/normal_5f96509129d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5fac1db716af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_5fa359e33db0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_5fabaea6a215c.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/lonozote/nejenijoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/family_practice_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/xigenibozowuf.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/68904751320.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/carpathian_forest_discography.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/222364842.pdfIn PDF document text
    • https://s3.amazonaws.com/tifemuma/pictures_of_dog_getting_hit_by_a_frisbee.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/kebere.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/48460652770.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/best_spell_to_make_someone_text_you.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/asia_cup_2018_time_table_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/binkw32._dll_windows_7.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC7 5340 bytes
SHA-256: b5d4c263c248cb0a3b796da3572d1a2e1605949e2b507890a02fd973eeeea148
font_01_sfnt_off0000fedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDC 11252 bytes
SHA-256: ddec27ae1b6741817b5fb501b0589c8832fa0f501362532ae0a4a69b7cbbdee6
font_02_sfnt_off000124fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124FE 16124 bytes
SHA-256: dd21f356278fd50ee943fe0fb0724b58c4fc746eeeb59b34e1a15f5c198055ed

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