Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b74c4f5b088e6cd…

MALICIOUS

PDF

90.4 KB Created: 2021-03-21 03:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d9bad351ac2fb6b82f6f7ef157ac2d6 SHA-1: de2ba111d85ed5ef0933d152048ccedacbbad83c SHA-256: 7b74c4f5b088e6cd5719f01b2a0e0814f41ff3bd52606ca295fb8bc28c9f294a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result for a movie, a common lure for phishing or malware distribution. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary malicious indicator is the external URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/wix?keyword=size+zero+telugu+full+movie+watch+online+free+thiruttuvcd
    • http://xugaguf.mypressonline.com/91108114103.pdf
    • http://samo-katim.ru/38346571964rmk4a.pdf
    • https://cdn-cms.f-static.net/uploads/4423453/normal_6023d1de93597.pdf
    • http://fuvagezilavez.mygamesonline.org/24419511967.pdf
    • http://adyga.site/mizijikisopekojetiv4uw33.pdf
    • http://prizinsta.online/participle_and_participial_phrase_exercises_with_answersjeq3q.pdf
    • http://tryplafond.xyz/775270929361t89a.pdf
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fd3a614b4eba.pdf
    • http://mupifojoxur.medianewsonline.com/34515767641.pdf
    • https://cdn-cms.f-static.net/uploads/4380223/normal_6039567ca5084.pdf
    • http://dle-tpl.site/verukatad3r1l.pdf
    • https://cdn.sqhk.co/womibakok/jeWzPia/gravity_falls_journal_3_pages.pdf
    • https://cdn.sqhk.co/libibajuzumu/wJheO16/carillas_de_resina.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7fe1f042-206b-4735-a408-f56337efeeb4.filesusr.com/ugd/d34b51_df5e807e990a4219b5e7c9bc7cdbf81d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/22e10ea3-4267-4297-82bf-822b8892ae16/why_doesnt_my_kirby_turn_on.pdf
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_ff935cfc24dc4369b13005e3c705d94f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e44fe089-887c-4fd7-ab04-babee1990e16/gakedifosuvipi.pdf
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_8807844ec9ba48ca87c1afc2982f8a16.pdf?index=true
    • https://b1706aec-e9b1-4c6c-9a93-f14ef4a1c402.filesusr.com/ugd/3b47cb_708e4da02e114d42b21a6bf1a1cbabcc.pdf?index=true
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_d368ba479a9a48e68e290955d6643017.pdf?index=true
    • https://uploads.strikinglycdn.com/files/53399a3a-d061-43ba-ac70-108cf1158d62/poribuwiri.pdf
    • https://uploads.strikinglycdn.com/files/67bcc20b-ed97-41a0-aae1-14981d82379d/tewizuv.pdf
    • https://uploads.strikinglycdn.com/files/b641b562-44e1-4aec-9e0b-48357a936b59/how_to_write_a_conclusion_of_a_paragraph.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012390.bin
ed25d7fc4e3f5193853f1b7e388f0dfd9856d7f176e2b9d30291c0c522309560		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12390 5564 bytes
font_01_sfnt_off0001366d.bin
4edb02eae6c99b26726013534020422aa9af093b2d676c51c20c11bf0738e6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1366D 10996 bytes

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