Malicious PDF — malware analysis report

Static analysis result for SHA-256 11feea540bf2354c…

MALICIOUS

PDF

80.5 KB Created: 2021-02-09 14:38:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ab52c3479118cd8dc9855251609b519b SHA-1: 975fa8b4c8489f0120a7d6fa9dee036c3855ab3b SHA-256: 11feea540bf2354cdb58e9170462ded5e11d6cb04836c2486b90b09bceb5b394
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a PDF link farm. The primary URL points to a domain associated with SEO manipulation or potentially hosting malicious content. While no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest an attempt to redirect users to potentially harmful external sites, aligning with phishing or malicious redirection tactics.

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
  • 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://maypoin.ru/aws?utm_term=bourr%25C3%25A9e+anglaise+flute+sheet PDF link annotation
    • http://wovolutoxali.iblogger.org/47211711101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5fe5a1a41ccdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413693/normal_5fc7eff0236c2.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/02jshaF/square_body_trucks_for_sale_in_florida.pdfIn PDF document text
    • https://tovunebutulewe.weebly.com/uploads/1/3/1/8/131871744/jupepomazujur-bugetesi-puximabeka-tifos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455894/normal_5ff8998d0a6d5.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/jgqeThc/28722792118.pdfIn PDF document text
    • https://sifirugosiwoxam.weebly.com/uploads/1/3/1/3/131384024/aad0e269.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409236/normal_5fdfb2002de13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393791/normal_5ff61f37a26bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500678/normal_60219a0081d0e.pdfIn PDF document text
    • https://rirusiwox.weebly.com/uploads/1/3/4/2/134265342/9244f.pdfIn PDF document text
    • https://������������In 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
    • http://xesijapapun.rf.gd/53358521197.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/business_english_course_books_free.pdfIn PDF document text
    • http://podapuleleg.epizy.com/36963034778.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/king_size_platform_bed_frame_cheap.pdfIn PDF document text
    • http://kezepinaxozegom.epizy.com/camera_png_logo_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/tamil_melody_caller_tune.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA38 5100 bytes
SHA-256: af12f61ad65c2cef9ff39373ef1e23d193d2ccbec337617ba352297e550a6743
font_01_sfnt_off0000db46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB46 16436 bytes
SHA-256: 495b1579b552d018ed12791db7a75a8e3da9ef9eaab46fb9f3b22cd38c48db07
font_02_sfnt_off00010e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7D 16268 bytes
SHA-256: 4ddb8f378add9f9fa32b5ac4ef67de2f69033d043d916bf74d4ed21dee7f0733
font_03_sfnt_off00012400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12400 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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