Malicious PDF — malware analysis report

Static analysis result for SHA-256 69cf036fca165cc2…

MALICIOUS

PDF

91.2 KB Created: 2021-03-22 03:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 02f5b19b13242cffa797646de5dc9859 SHA-1: 2adf8c053ceb0e5ed1f48d8c8f4ce8db0c79efec SHA-256: 69cf036fca165cc24ef2a0e5f459388a8c540975ba05ecd954fbc775b986a245
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to potentially malicious domains, suggesting an attempt to redirect users to phishing or malware download sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a large number of links on disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cdn-cms.f-static.net/uploads/4472764/normal_604d83ef195e3.pdf In PDF document text
    • http://allwoman.site/gujofekuxidowogixuduguh.pdfIn PDF document text
    • http://autolombardpro.ru/quimica_analitica_harris_gratis5i6s0.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/rBicjgj/beyblade_burst_app_mod_apk_5._0.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/jlggLnR/battlevoid_first_contact_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_5fdfffbdd2c90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417675/normal_5ffc20792a076.pdfIn PDF document text
    • http://yandex-delivery.cc/41207838650r6sre.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404290/normal_6056808ccddec.pdfIn PDF document text
    • http://bipivulaxoxot.iblogger.org/bedtime_story_books_for_toddlers.pdfIn PDF document text
    • http://telgrm.site/jafodoryrown.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/88yQhdj/perfect_soccer_prediction_site.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/ihibbjj/tojoguwexodubilukes.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/ijheVhg/om_nom_nom_cookie_monster.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/gifnjji/vefufugijexo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412584/normal_6023c88e737a3.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hgcigSh/76986636204.pdfIn PDF document text
    • https://cdn.sqhk.co/nufomewo/NjegDhi/92196830912.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/npqUEhd/16398807506.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/4NO0L8wlyOA/wb?keyword=associated%20press%20stylebook%202017PDF link annotation
    • http://fiwarirekagugen.epizy.com/33119709597.pdfIn PDF document text
    • http://wujebewemifilav.epizy.com/john_medina_brain_rules_for_baby.pdfIn PDF document text
    • http://donusifitaki.rf.gd/zemuxatulefevolavixutevew.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_off00010d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8A 5768 bytes
SHA-256: 4711bc2b815c1f4eea2accba642afdbf65fb833a52fb6262cbcc878ea3708e3c
font_01_sfnt_off0001214e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214E 11924 bytes
SHA-256: f50a987a4e0bb4ef7b656d3b9b355715c1455703d24ca7239dee24d7f8f6f2b9
font_02_sfnt_off000149d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149D7 16204 bytes
SHA-256: 6ff35bbcdef839a823e086214e5d609f702bf6b4484614f6c4b824d32b7fcc76

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