Malicious PDF — malware analysis report

Static analysis result for SHA-256 608e4890881f59ee…

MALICIOUS

PDF

76.8 KB Created: 2021-04-06 19:37:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e88771a039b1cac59584cfb71a59c0b5 SHA-1: 40677d185396b54207068b581fa4d07ab93b5743 SHA-256: 608e4890881f59ee46dbccccbf627026ce3c2c8bee0b1b2645142bc5bfde3125
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to domains associated with SEO spam or phishing. The 'DOC BODY' content, though heavily corrupted, suggests a lure related to 'Sony walkman radio instructions'. The presence of PDF_SEO_LINK_FARM and PDF_URI heuristics, along with ClamAV detection as Pdf.Phishing.Trojan, strongly indicates a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/wix?keyword=sony+walkman+radio+instructions PDF link annotation
    • http://salonvarna.com/lizagituzijewetuwosojy1mh.pdfIn PDF document text
    • http://kagotigidiwijar.iblogger.org/teacher_s_guide_grade_6_english_medium.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/puzorewemazutilufexalu.pdfIn PDF document text
    • http://klyshsheff.xyz/53704023079ut5n.pdfIn PDF document text
    • http://wulurag.mygamesonline.org/sukegifejipezu.pdfIn PDF document text
    • http://wozilimesiz.mypressonline.com/what_does_sum_up_mean_in_texting.pdfIn PDF document text
    • http://daddytestit.xyz/player27s_handbook_5e_backgrounds53ml4.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/posterior_knee_pain_exercises.pdfIn PDF document text
    • http://leqqurint.online/232377978285kiwd.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/fajixe/biopsy_guided_by_ct_scan.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/background_hd_black_images.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/plural_possessive_noun_worksheet_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/lorawi.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/government_of_india_6th_pay_commission_report.pdfIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_09e3b09f7dbc4aed94a43bba9a21244a.pdf?index=trueIn PDF document text
    • http://kogobobud.rf.gd/20133034537.pdfIn PDF document text
    • https://63d876aa-455f-4c41-9c38-50747f3e0b95.filesusr.com/ugd/a220d5_872ce0ec3e88438cb3921fbdf3f29734.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/beastmaster_hunter_pet_guide.pdfIn PDF document text
    • http://tiwosutodegadax.onlinewebshop.net/arbitration_act_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/formato_de_minuta_de_trabajo_en_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/84290820189.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/80615091795.pdfIn PDF document text
    • http://werokixa.rf.gd/laxux.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_f4530da5bf92483eabe1e5d32c77b37e.pdf?index=trueIn PDF document text
    • https://fab88ded-2f12-46c9-b6ec-f290036286cc.filesusr.com/ugd/cce69c_194937b06f0c47148371e05109cb9f94.pdf?index=trueIn PDF document text
    • http://bimuvugibane.rf.gd/xamubu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB21 4744 bytes
SHA-256: db67cc3199e9e1adf34a8e56346c38e8b738981f58dcd57ca4ddea64fa8aed86
font_01_sfnt_off0000ebac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAC 5448 bytes
SHA-256: 493a7f5f91dc6fe0b87f041c8392d9023fe4f06b59b82b46723bc6f9051b2eea
font_02_sfnt_off0000fe38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE38 11584 bytes
SHA-256: 493af45812903ceffa280a86b156d2b3f38d5a8ce0e651ee67c36b4b416aed7e

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