Malicious PDF — malware analysis report

Static analysis result for SHA-256 f356dcee087a8517…

MALICIOUS

PDF

78.3 KB Created: 2021-03-28 04:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 29fecc7df905ab1afc9f4a41b3f8067a SHA-1: 9f6c85433f98fcc7371cf6f7d079e1d63fa0e8c5 SHA-256: f356dcee087a851775c671b8253b2e13c4108dd3b55e20fb91ede556d776a15c
116 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including a ML classifier and ClamAV. The 'SE_CALLBACK_LURE' heuristic indicates the document likely contains a phone number intended for callback phishing or a tech-support scam. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick the user into initiating contact, potentially leading to further compromise or financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xezojetit.ru/wix?keyword=cordless+roofing+nailer+paslode PDF link annotation
    • http://patedeziw.mypressonline.com/btec_health_and_social_care_level_3_book.pdfIn PDF document text
    • http://itanah.space/pupinej3hv2.pdfIn PDF document text
    • https://cdn.sqhk.co/xokipuxat/ijij3hd/6900642212.pdfIn PDF document text
    • http://kodavuviguwu.mypressonline.com/standard_costing_and_variance_analysis_examples.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407781/normal_6036ac6a855c3.pdfIn PDF document text
    • http://instapodarok.site/5321609681o3cwk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369802/normal_600d87f246a9f.pdfIn PDF document text
    • http://malespw.xyz/5767136398do5wr.pdfIn PDF document text
    • http://bamirajewenexo.medianewsonline.com/2020_big_data_analytics_market_study.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_6019b6b857ba5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370317/normal_60253e0d485cf.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvakumo/Ofghjjf/jurassic_world_ipad_game_crash.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/devuxuzejozam/seesaw_help_guide.pdfIn PDF document text
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_ff1ee257b1974957b43acc7aaa2db5d3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jevelel/apparel_industry.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_f0bea8b171f54d3eae4223fc805d8271.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mizeteb/36428695523.pdfIn PDF document text
    • https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_81356c01423b4d2a8490bc76ac17a077.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/megelugik/the_canterbury_tales_by_geoffrey_chaucer_worksheet.pdfIn PDF document text
    • https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_f4b248e09f1d40b78772a12f124aace7.pdf?index=trueIn PDF document text
    • https://7605d98d-8b17-4a41-9383-f5c8d5af9bcc.filesusr.com/ugd/2bed4c_7ac189b73cfb4cfe87ce2d6311b57df4.pdf?index=trueIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/amaryllidaceae_family.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF374 5112 bytes
SHA-256: 6d1e29967804b0000b81a9ba2b341d6a10399116a609fbcf5b2165b83765d657
font_01_sfnt_off000104e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 11508 bytes
SHA-256: 0e42b104f77d4be49d7d5b37711d966df9864be08e19d6323e4b120b7d72d4fc

Open this report in the interactive analyzer, or submit your own file for analysis.