Malicious PDF — malware analysis report

Static analysis result for SHA-256 44240b13de9d4479…

MALICIOUS

PDF

125.4 KB Created: 2021-03-14 20:25:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ba82a7cf9fecca0767b94d786528ed55 SHA-1: 9a2b52561dcfdcce73862456e47b88258c30658e SHA-256: 44240b13de9d44799ea15a877611ea1a30413c4285b43f07880dcf9d2ff76d5d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9976

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://dugedepap.ru/award?keyword=anamnesis+en+fisioterapia+pdf PDF link annotation
    • http://wudaxozibutix.sportsontheweb.net/67782057392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_603934dc57084.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/lizavasexofabetup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490752/normal_5fcbaa6303adc.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/f23hg0O/703744848.pdfIn PDF document text
    • http://teksol.xyz/nisodp6q6g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494875/normal_60053b3c52eed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_6010201fbe591.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/71807330100.pdfIn PDF document text
    • http://dvestideyli.xyz/lazuku1q37y.pdfIn PDF document text
    • http://snail-case.store/what_is_the_importance_of_recycling_materials7slmp.pdfIn PDF document text
    • http://tujidal.mypressonline.com/fire_and_ice_by_robert_frost_analysis.pdfIn PDF document text
    • http://stav-games.ru/hp_laserjet_pro_400_m451dn_toner6503j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fd8ceb96bb06.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/Rjiihjb/81963178417.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/aefb1f17-c1d4-4ca8-bac5-9089ec0a7686/59287218036.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/dcount_function_in_access_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/pesquisa_de_anticorpos_irregulares.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/012364b9-7ee4-44fe-a602-c6c7cd6f4ef8/how_to_program_hampton_bay_low_voltage_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/how_to_calculate_gdp_per_capita_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/54121903685.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/dimensions_for_parallel_parking_test_in_georgia.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17951 4932 bytes
SHA-256: 54d63c78d5c590565fbb9d2c07d3750e2766d1afad7bfa97e9b5083c42c0aa03
font_01_sfnt_off000189e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189E7 3048 bytes
SHA-256: 6bc271b45cb36d4a3d37bc7c33779af8c32b7b3243e7e2a35ac728594946aeba
font_02_sfnt_off000196a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x196A6 12824 bytes
SHA-256: 6aee2ac312a2fd762444afaf292584523c8b235bdc4bfedd64d62db40101e694
font_03_sfnt_off0001bf0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF0D 17024 bytes
SHA-256: 00348bfcc54e964df8864c71d4050c137f3ae8a1a8fb8eca9ca42735696bfee9
font_04_sfnt_off0001d6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D6DD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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