Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3b5041a0bcbfb6…

MALICIOUS

PDF

96.5 KB Created: 2021-03-22 05:05:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00cb11305b8903491d07a4cbe2441386 SHA-1: 4444d333d5deb6ca4499162fb9cbd28b8f4eed43 SHA-256: 3b3b5041a0bcbfb6165372a29875b6e05befb7655fd2f314dd5d9ccd4286e97c
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a prominent one pointing to a site offering a 'sling tv hack mod apk'. This, combined with the ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/wix?keyword=sling+tv+hack+mod+apk PDF link annotation
    • https://notilapixoto.weebly.com/uploads/1/3/4/3/134397855/monalasopi.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/l9jcicU/archipelago_botanicals_charcoal_rose.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/MjhPAcK/space_jump_drama_game_ideas.pdfIn PDF document text
    • https://zumonula.weebly.com/uploads/1/3/5/3/135323502/7038246.pdfIn PDF document text
    • https://gazufapojekivu.weebly.com/uploads/1/3/4/8/134890592/903093c096.pdfIn PDF document text
    • http://olipaka.xyz/metallica_all_albums_freesa8j6.pdfIn PDF document text
    • https://kafiwixuvaso.weebly.com/uploads/1/3/0/8/130874495/pirelekojeg.pdfIn PDF document text
    • http://kersita.space/deficiencia_de_las_vitaminasjcwfw.pdfIn PDF document text
    • http://bestcreditcheck.info/zuwoxazakevezomo3hzg1.pdfIn PDF document text
    • https://xurobogi.weebly.com/uploads/1/3/1/1/131163732/wapuzenojiwev.pdfIn PDF document text
    • http://parhelifrl.space/the_adventures_of_huckleberry_finn_movie_1985mq4b9.pdfIn PDF document text
    • https://cdn.sqhk.co/wolanojijen/hmbZJQF/78214968161.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzemesafe/jjygeha/transferwise_login_without_phone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_ca35e530ff134d98b85e3b3249ebe30c.pdf?index=trueIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_65d580cbfc9a4b0480e0cbd46a0368b5.pdf?index=trueIn PDF document text
    • http://lumipanu.epizy.com/62826466280.pdfIn PDF document text
    • http://nikalokibutoxes.rf.gd/vuxedilinap.pdfIn PDF document text
    • http://zunuwovadete.epizy.com/sidazunubow.pdfIn PDF document text
    • http://rajamuviw.epizy.com/sozasonisuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8f848f9-8550-4fdb-82f2-e22510b9eb61/best_sword_for_close_quarters_combat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cebb11e-1617-41dc-b972-cc8b01a95a9e/grey_sheet_overeaters_anonymous_food_plan_blue_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3270a7-718d-4d1a-8659-c6979914d1d9/jareg.pdfIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_f7aa0e9fc5324e348d79f9d61d118043.pdf?index=trueIn 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_off00013922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13922 5440 bytes
SHA-256: 2bc18706b5bb76d847123a94da128b7097a47ee7317435e49f635e9da1581417
font_01_sfnt_off00014b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B88 12664 bytes
SHA-256: c6d4c9326f34bbb0106115339ed681160d06a3aa5353ce1f806497fba637e0e9

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