Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9fcb956f8ccdae…

MALICIOUS

PDF

83.7 KB Created: 2021-02-26 22:29:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: c5625e4e630f24f930af1f34330badda SHA-1: e0882ab7743b8a9e956612dcf24ee7a70e76a0b9 SHA-256: 3b9fcb956f8ccdaec6c8a4e3683564eaf3988d3189de11ba9f148dd84142a2b9
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, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into believing it's related to airline baggage information. The document body, though heavily obfuscated, contains keywords that align with the lure. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/award?keyword=united+airlines+baggage+weight+limit PDF link annotation
    • http://tezubimisigej.iblogger.org/zepurut.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/45457735426.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5fd0658b5be97.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/312bf6b4f61697b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_5fe75d97ba71e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446166/normal_602c8463347b3.pdfIn PDF document text
    • http://nedabemimekoz.iblogger.org/android_go_phones_canada.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/73861234726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491673/normal_602741285db5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489407/normal_60394eac285ab.pdfIn PDF document text
    • https://biwamuneluzotip.weebly.com/uploads/1/3/2/6/132696598/227a325b25f6a1.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/wuvoluwopuzadolup.pdfIn PDF document text
    • https://somubafe.weebly.com/uploads/1/3/4/4/134444697/d6d43c2412ff34.pdfIn PDF document text
    • https://gikatufezido.weebly.com/uploads/1/3/4/3/134338368/182b36.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://s3.amazonaws.com/pafiganovavi/diabetes_care_plan_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/idsa_guidelines_pneumonia.pdfIn PDF document text
    • http://rojanesifilagu.myartsonline.com/how_do_you_fix_timing_on_a_sewing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/vebuvesidupet.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/afcat_2_2019_application_form_date.pdfIn PDF document text
    • http://bubexixan.epizy.com/expandable_garden_hose_review_from_consumer_reports.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_off0000e6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F0 5140 bytes
SHA-256: bce1254a0bcd40785ebd3ffa0fdbf5316e23a872aee28f42bc37b4f32a2940b2
font_01_sfnt_off0000f83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83A 10948 bytes
SHA-256: 900730d433550d9ded137924400356a5cbbc40306f538f441bf69b57d65b44d8
font_02_sfnt_off00011dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCC 16232 bytes
SHA-256: 68eef4b610644b6a98f668349b58b424e8310755c20c018328a8321db0e17a89
font_03_sfnt_off00013330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13330 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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