Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d9273d01ae999a…

MALICIOUS

PDF

76.9 KB Created: 2021-02-11 15:19:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 68cffd69b114f4e3eb0ddefb1b754c52 SHA-1: 1e4957bb7acaf58ab3e9407e7eb3550e320f8cde SHA-256: 76d9273d01ae999a32e9bde12cfe0ad27c0bfda678242d3d07dfa7e9aaa01986
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to an 'answer key'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=4-8+complex+number+puzzle+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493888/normal_5fffaf5613936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_601de00f86650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5fce336d63713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373526/normal_5fe4f6ac46798.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_5fcb4778cc82d.pdfIn PDF document text
    • http://kraftmann.su/apush_period_1_guided_notes_answersuymu2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381997/normal_5ff5454bdb96b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411717/normal_5fcbed9f9669d.pdfIn PDF document text
    • http://kurs1.xyz/runirbo3pp.pdfIn PDF document text
    • http://tugezij.22web.org/21191905155.pdfIn PDF document text
    • http://ibkreactiva2020.com/88545628080xyjjg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458390/normal_5ff6a746b6fc0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jawegoxizifiti.epizy.com/36301967740.pdfIn PDF document text
    • http://niwaraz.epizy.com/35287218452.pdfIn PDF document text
    • http://negifunowulag.rf.gd/ab540_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/o_b_c_application_form.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/company_logo_png_file_free.pdfIn PDF document text
    • http://lavavil.rf.gd/recurring_decimals_to_fractions_worksheet.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_off0000eded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDED 5812 bytes
SHA-256: c6a0b523b02353ead1451bcbc51ed56b367265f876886abfc6a8da727b691a47
font_01_sfnt_off000101cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CB 10588 bytes
SHA-256: 310e63663cee56ede0a6aee80604eb59d18d75cd8e22c8b2409dc7f2ef3baa74

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