Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cd6120ee2befd9…

MALICIOUS

PDF

82.1 KB Created: 2021-05-22 18:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 850103d03559eaf27cb6bc069917b3c0 SHA-1: b59284930fd25a69f600f065fd24f7f719fff2ac SHA-256: 84cd6120ee2befd9d4d071c3fa6f24d0829995bea2ffcaf09a2958404b1e7d22
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs users to download a game. This URL is flagged as malicious and is the primary indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/strik?utm_term=download+game+army+battle+simulator+mod+apk
    • https://cdn-cms.f-static.net/uploads/4387417/normal_605134ce8848c.pdf
    • https://cdn-cms.f-static.net/uploads/4492253/normal_606e3f1f72c06.pdf
    • https://cdn-cms.f-static.net/uploads/4404959/normal_6053ecf150a95.pdf
    • https://static.s123-cdn-static.com/uploads/4405419/normal_5ff50b9d88e90.pdf
    • https://cdn-cms.f-static.net/uploads/4392872/normal_601733f2d119c.pdf
    • https://static.s123-cdn-static.com/uploads/4411702/normal_5febd8337f690.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/43b63bae-4e30-443e-87a5-1f5cacd4c413/98941168656.pdf
    • https://uploads.strikinglycdn.com/files/a1f53bd7-4ed6-47d7-9c24-9793d226edd0/54378549522.pdf
    • https://uploads.strikinglycdn.com/files/77e1f6a3-1bb7-4bde-9a2b-ad73243bbe96/gajozigabizunebipepudis.pdf
    • https://s3.amazonaws.com/zidenigad/composite_functions_exercises_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/099ba4c2-58e6-43d6-af28-181b7c0831c2/the_pursuit_of_happiness_chapter_4_summary.pdf
    • https://uploads.strikinglycdn.com/files/da984d1f-23f8-41de-8311-9152d36cd7d1/lenuxosax.pdf
    • https://uploads.strikinglycdn.com/files/9e566eb7-8299-4946-b233-36a4b04cfad6/why_is_the_art_of_mastering_nonverbal_communication_important_brainly.pdf
    • https://s3.amazonaws.com/muwomapotumugi/nipudomobosa.pdf
    • https://uploads.strikinglycdn.com/files/63a6257d-c201-405c-8a5a-092cb4272f0e/instructions_power_pressure_cooker_xl.pdf
    • https://uploads.strikinglycdn.com/files/4d7adc71-1eaf-4bcf-ace8-3ddca7cd99d5/fukirowidugidupifeno.pdf
    • https://uploads.strikinglycdn.com/files/10fda23b-65b6-44e5-b754-dc576860bc29/dazevaposulabuvige.pdf
    • https://uploads.strikinglycdn.com/files/24a0c1f9-5414-4ae2-86f2-1f57fb7c1319/fazemiji.pdf
    • https://uploads.strikinglycdn.com/files/fc2c8f11-16f4-4744-9307-938ba5924d98/91990261377.pdf
    • https://uploads.strikinglycdn.com/files/c7f1dfc9-d0f5-4818-90cb-e20aa2a70789/4497400282.pdf
    • https://uploads.strikinglycdn.com/files/bd51e266-4990-483e-aad7-44d521f944b5/memawexalunemetedaj.pdf
    • https://uploads.strikinglycdn.com/files/460e9d1b-669f-4df9-8945-775a59607d62/what_does_tempest_in_the_bible_mean.pdf
    • https://s3.amazonaws.com/xurixado/wodafovegu.pdf
    • https://s3.amazonaws.com/jebokizez/how_to_remove_a_thermostatic_mixing_valve.pdf
    • https://uploads.strikinglycdn.com/files/7088d148-847f-48c7-b4e8-14500e41dde4/x99_rampage_v_extreme_edition_10.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd4.bin
48b6261fcb1aff9906e23ca3a804cdc3dddfe342d51d98ee1893ff98e08950a9
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD4 5676 bytes
font_01_sfnt_off0000ff30.bin
fa33611ee7cc50a5645e177e290be79f3c681e759e9d3201f4ebc96739ba31f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF30 10544 bytes
font_02_sfnt_off00012386.bin
e373ff75918e1e654a80cbb8b006ae142a73148e0ea50f6ae9a569918cfb0155
pdf-font-stream PDF embedded font (sfnt) at offset 0x12386 16540 bytes