Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c9b381b53d6b17…

MALICIOUS

PDF

294.2 KB Created: 2021-04-05 13:12:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0002df01b93f970eb84886272eedc7c5 SHA-1: b3ab6c99fee96de816e6c4c605488f3323a131a2 SHA-256: 56c9b381b53d6b17989362f66f0231e0c35e4e29cbc8fbdcde0ed4bf6e7a5dd7
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

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://bologen.ru/wix?keyword=work+at+home+job+queen PDF link annotation
    • http://closemaze.com/bd_army_admit_cardgujzx.pdfIn PDF document text
    • https://cdn.sqhk.co/golizojuw/BW9jfbK/cute_teddy_bear_wallpaper_free_download.pdfIn PDF document text
    • http://naliputa.mywebcommunity.org/cub_cadet_rzt_50_parts_amazon.pdfIn PDF document text
    • http://look-hotel.com/sonepipa4pqc8.pdfIn PDF document text
    • http://nat-yoga.space/wuguxukud086al.pdfIn PDF document text
    • http://fortysgjdk.fun/grade_2_spelling_wordspkxne.pdfIn PDF document text
    • http://milano-moda.space/43085555056uqw94.pdfIn PDF document text
    • http://rusewigojubilon.mygamesonline.org/98668142183.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/ge3iagj/cheap_island_for_sale_canada.pdfIn PDF document text
    • http://usacarins.com/78145070571bj13d.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/pYjjWid/jak_and_daxter_the_lost_frontier_ps2_ebay.pdfIn PDF document text
    • http://idealica-co.site/32194586153tryaw.pdfIn PDF document text
    • http://leomannapov.com/definition_dotted_line_reportingvhfkn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b03e51a8-7171-48c0-94d6-e4c032e6f37f.filesusr.com/ugd/9421c8_9e4629a35fdf4efeb636b7d005e67402.pdf?index=trueIn PDF document text
    • https://d525ee04-2a40-494f-8ba9-fee52f7b18ee.filesusr.com/ugd/8b8e24_6b1aaac4dc8143a6aed034f2186e7344.pdf?index=trueIn PDF document text
    • http://savivubexikib.rf.gd/ribimu.pdfIn PDF document text
    • http://tukabawibuge.rf.gd/glencoe_precalculus_online_textbook.pdfIn PDF document text
    • https://4bbf79d8-97e4-42de-9a75-948158c354f0.filesusr.com/ugd/52f5d3_a6575e97faf54c4fbccc7a1403fb2673.pdf?index=trueIn PDF document text
    • http://jetavepizixe.epizy.com/causas_de_anemia_microcitica_hipocromica.pdfIn PDF document text
    • http://vijiviwo.epizy.com/assam_budget_speech_2020_19.pdfIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_bce1facfd5be4a0b890273d3f7975ab2.pdf?index=trueIn PDF document text
    • http://nidomovux.epizy.com/kakod.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000185f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x185F0 237240 bytes
SHA-256: 4402f14f0e8a53c5ff02153877b1c58388c245753e86f99d13e7bf4e231cda3b
font_01_sfnt_off00043961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43961 5136 bytes
SHA-256: 8403b7a95b81e8e866825176667936103e287da2544e42f61651194702f90cfb
font_02_sfnt_off00044ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44AC6 11840 bytes
SHA-256: 6cc8427d7b00c73d59d194945292e5a3f520106e7df0f37f58507d9d473e3110
font_03_sfnt_off000472d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x472D0 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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