Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c0e8254b356fe6…

MALICIOUS

PDF

83.4 KB Created: 2021-03-14 21:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: de1589551e885ad936205293355a6ce9 SHA-1: 47ccb0c23b9e7d41611c8ed0cb9e7e4eba13dd33 SHA-256: e4c0e8254b356fe6c9881f32cc3801d1f25b3d8eb91c5d426b509f696ed45be2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. The presence of an external URI pointing to 'seumenha.ru' suggests an attempt to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the nature of the detection indicate a phishing or malware delivery attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=bhumi+song+ming PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5fca4bf2de2e7.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/6881555.pdfIn PDF document text
    • https://zorikibezoxima.weebly.com/uploads/1/3/1/3/131384208/sowila.pdfIn PDF document text
    • https://cdn.sqhk.co/zavipudajose/gg0zhyV/19511406056.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/gSNRTZJ/nova_launcher_pixel_icon_pack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_6029f8c9491cd.pdfIn PDF document text
    • https://cdn.sqhk.co/tiluzegata/TGjfVPJ/4_pics_1_word_level_1881_answer.pdfIn PDF document text
    • http://mydenverneighborhoods.com/convention_aix_les_bains_maroc_france0t2dt.pdfIn PDF document text
    • https://cdn.sqhk.co/kifukuvitog/gjjeji0/spiritual_awakening_definition.pdfIn PDF document text
    • http://eslivdrug.space/98934796437p87u3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_5fd1b607cbaea.pdfIn PDF document text
    • https://dojebuxepoviguf.weebly.com/uploads/1/3/1/4/131407435/nenipitufole_wifare_zibezoxojanu_natusij.pdfIn PDF document text
    • http://scarcebook.com/what_do_eagle_feathers_symbolize_in_native_american_cultureg3v0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402488/normal_6009a1fd3130b.pdfIn PDF document text
    • https://cdn.sqhk.co/fabetojowuje/gs4hcKI/rc_trucks_4x4_off_road_waterproof_for_sale.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/pukaridimupo/hp_laserjet_cp1525nw_error_49.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1131440e-0108-492c-b141-e92d67cf1876/52450586492.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/score_hero_hack_version_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/71997680114.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/jonevevimoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a5ccd48-9523-4a1c-af87-de21e3c14d68/kofarevo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E73 4812 bytes
SHA-256: cd443b9a7829663a0414b79f38791c2ce3391f104e0b3f5660de8e52f6eb4b15
font_01_sfnt_off00011eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB1 10308 bytes
SHA-256: dd73e6a1432677663e1f7516931a894843d5ea5dcc0815673e0f37f5f16cebfb