Malicious PDF — malware analysis report

Static analysis result for SHA-256 4222689db43d1ace…

MALICIOUS

PDF

83.8 KB Created: 2020-11-11 15:19:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bb9e1e409c39019bf87abd7120cbae87 SHA-1: d94a9cb0415c9b7f7e8d9805d132c7a131cd67dc SHA-256: 4222689db43d1ace82ce65d5eb9323a4ea261375a45597b54c2a695184be25e2
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=watch+hunger+games+catching+fire+online+hd In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392470/normal_5f9f3bbd856bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8965af1a50c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_5f95bb091b79b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485321/normal_5fab7545c2a38.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/tetenifeme/bogizozivov.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/haier_hpnd14xht_e_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/heinz_hall_pittsburgh_pa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de7bea9c-4d30-4efd-9f05-3d1e850aa8c8/xotuzexageliduva.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/ruliwo.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/how_to_install_.apk_file_in_android_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2d9a2f1-c64f-459e-b3f1-35e402d77683/60079991305.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/xisodexirijorote.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_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 5328 bytes
SHA-256: 03ddb8ad7478c4f2f90cd2e58cdaf0c104e83c19e430a6cf1f1d8b98625e541e
font_01_sfnt_off0000f801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF801 11108 bytes
SHA-256: 96b93917bbb50194cb2a80882e244109d548ebc9997da3750f2c4e0855bacace
font_02_sfnt_off00011e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E30 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off00013345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13345 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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