Malicious PDF — malware analysis report

Static analysis result for SHA-256 53076727108bab3f…

MALICIOUS

PDF

82.0 KB Created: 2021-04-18 12:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6b50ee3bf5aa60010fcf99314c477df7 SHA-1: 8dae24dbc8875912e5d9bd90155fca2d22c327b8 SHA-256: 53076727108bab3f2f0cde21f0c854aae0b909ed5ea2f1c8ff76c3129a8167bc
104 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. It uses an invoice-themed lure. 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 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://leonvi.ru/strik?utm_term=how+to+use+usha+oil+heater PDF link annotation
    • http://terakusinuw.mypressonline.com/62078694101.pdfIn PDF document text
    • http://kufemotobenin.66ghz.com/kipizirixezugaverobetutu.pdfIn PDF document text
    • http://topmassage.net/premium_wordpress_templates_202060rll.pdfIn PDF document text
    • http://healingtunes.ru/28908853757hjkgw.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/75066369659.pdfIn PDF document text
    • http://zigamuko.iblogger.org/musumeg.pdfIn PDF document text
    • https://xonaxogurevof.weebly.com/uploads/1/3/1/4/131453171/wugebemiwuv.pdfIn PDF document text
    • http://helplnstagramoffice.com/boy_scout_traffic_safety_merit_badge_pamphlet5nbbe.pdfIn PDF document text
    • https://jozinuzo.weebly.com/uploads/1/3/2/7/132712000/kinidinezefa.pdfIn PDF document text
    • https://tinuxapesizagi.weebly.com/uploads/1/3/4/4/134440362/poxexuveda.pdfIn PDF document text
    • https://ribovaboj.weebly.com/uploads/1/3/0/7/130775049/e144d1de05d.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/kavifunaruvi/94071271505.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/how_to_program_malibu_light_timer.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/pathfinder_2nd_edition_character_sheet_fillable.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/top_best_android_antivirus_apps.pdfIn PDF document text
    • https://ed7c5604-ec0f-4ae6-9d22-6d534b57d154.filesusr.com/ugd/1d5a3f_e88c1c4c22da4e69ade73afffd9356e5.pdf?index=trueIn PDF document text
    • http://tiroteta.rf.gd/torerebifobuguvofaredejom.pdfIn PDF document text
    • https://bc881323-2374-4635-a2b7-f126f9929bd8.filesusr.com/ugd/546a35_a685eefbd0124f39bf640f3e83301995.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/taturi/54662126962.pdfIn PDF document text
    • http://bonizigajivoxi.epizy.com/xixuwo.pdfIn PDF document text
    • http://rupizilok.epizy.com/ascii_code_table_c.pdfIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_d06f69df7df04dac88f4923373d35732.pdf?index=trueIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_5858ae3e862f42f688174a011fc79ebf.pdf?index=trueIn PDF document text
    • http://bugazepoja.onlinewebshop.net/hp_deskjet_2541_all-in-one_printer_copier_scanner.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB65 4828 bytes
SHA-256: 003b4cb11ca4ffb54f98fe09e6ac384b5abfc77bcaf2f9e31d4469c08e27caa2
font_01_sfnt_off0000fbd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD3 11604 bytes
SHA-256: fb27eb6accdc6bff05f0b985077de4ae1fff1225573481c7f1cc195518bfdf71
font_02_sfnt_off00012314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12314 16256 bytes
SHA-256: 6c881bbf81c12ad76998facf89aac3f3ac31bc979bbe10976885dbba23c5e92f

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