Malicious PDF — malware analysis report

Static analysis result for SHA-256 a47912ac75f4f226…

MALICIOUS

PDF

88.9 KB Created: 2021-03-30 01:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5a472a1ce7d2e0676a2747736fe46eb SHA-1: ec151b68e9b39d7c785c493ef345ad5110498503 SHA-256: a47912ac75f4f226e757da02823f92524ca947bcad70571f4b68fd09f806a4c8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to a book title, suggesting a lure to disguise the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://midufefew.ru/award?keyword=karen+blixen+babette+s+feast+pdf
    • http://guzexesuge.mypressonline.com/is_there_a_sequel_to_harry_potter.pdf
    • http://naliputa.mywebcommunity.org/declaration_de_cession_de_vehicule_remplissable.pdf
    • http://fefiwizam.sportsontheweb.net/nokia_lumia_521_t_mobile_unlock_code_free.pdf
    • http://rusewigojubilon.mygamesonline.org/jagegi.pdf
    • http://raraveluwogevuw.mypressonline.com/what_is_after_we_collided_rated_in_australia.pdf
    • https://cdn-cms.f-static.net/uploads/4444092/normal_6038b8b862e5d.pdf
    • https://static.s123-cdn-static.com/uploads/4369779/normal_5ffbc39073b4e.pdf
    • http://wujejejifi.mygamesonline.org/elite_platinum_air_fryer_2.1_qt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gixopiv.onlinewebshop.net/7941686858.pdf
    • https://uploads.strikinglycdn.com/files/bcd7372f-1bff-4614-9b72-2c31ef07121c/ap_english_vocabulary_list.pdf
    • http://kofukev.rf.gd/break_even_analysis_lecture_notes.pdf
    • http://luruloligof.rf.gd/gumuzujelakipel.pdf
    • https://uploads.strikinglycdn.com/files/754b0548-9060-4acf-8355-1eb0d6d5ff58/windows_10_no_desktop_icons_after_login.pdf
    • https://uploads.strikinglycdn.com/files/46ebaac5-09ee-4d7f-8ba3-4c20899175ea/envisioning_information_amazon.pdf
    • http://rotutaj.epizy.com/26122586494.pdf
    • https://uploads.strikinglycdn.com/files/4aa0946d-c1c3-436a-a8f6-a1e77fbd1bfe/baliwigejomewewut.pdf
    • https://uploads.strikinglycdn.com/files/ebe636a0-04ea-4f3a-a794-a493ecd07e17/story_of_the_eye_free.pdf
    • http://zipokuxabatu.rf.gd/rubber_sheet_for_child_bed.pdf
    • https://uploads.strikinglycdn.com/files/b3f3d9fc-e7b1-4e66-8df0-d62d17dbc085/rome_2_total_war_campaign_strategy_guide.pdf
    • https://uploads.strikinglycdn.com/files/c259f897-4830-4bd3-ba0d-ffdbb0909822/lujolusefobujekesi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010db1.bin
d33160e46cc8b445539c8a442e1c0cd5097ab87b59ae5e2f9514350b705932bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB1 4892 bytes
font_01_sfnt_off00011e51.bin
2c670157ff684a8c7fc29d95b8236e99b5bb57c24ec19f68b2c3c8545d439a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E51 12780 bytes
font_02_sfnt_off000147db.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147DB 4324 bytes

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