Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec9898d55847e8b7…

MALICIOUS

PDF

88.6 KB Created: 2020-11-23 15:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a6ba5de7f7e63ead66043c5ab738b3fd SHA-1: b81575a0cbdf4b17cd5de577bbb357b35de0df8f SHA-256: ec9898d55847e8b73eaba9c66b0b6759e5ed1169e65273bd1f9829468dc97ad3
96 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 embeds external URLs that direct users to attacker-controlled resources. 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
  • 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://traffking.ru/strik?utm_term=airport+express+review+2015 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421330/normal_5fa6f4d7258a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5fb8467c05987.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/toddler_tutu_waist_size.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/example_answer_to_what_are_your_weaknesses.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/dungeons_and_dragons_5e_medicine_skill.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/81.36_tm_to_gm.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/cube_escape_case_23_chapter_4_stuck.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/photostage_slideshow_producer_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/20089697940.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/54535217158.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/inference_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/powugipa.pdfIn PDF document text
    • https://s3.amazonaws.com/nolomuxuma/how_to_get_to_elba_island_from_rome.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/wojizurilakovalogi.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD520 7500 bytes
SHA-256: 8051943799e2c373d24429bd6c730529037b30e61f32c7ebdb810c11aad8ce6b
font_01_sfnt_off0000eeb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB5 5232 bytes
SHA-256: 9d34c4479f7cf8698da954c17ee9d3ad741da6bbc50a072d04cf6e6e6d177f45
font_02_sfnt_off000100b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B0 6148 bytes
SHA-256: 488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d
font_03_sfnt_off00011090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11090 14972 bytes
SHA-256: b7f5b98b07a045fc3a6ac890342ee68cbea41c44b24f8b7e8edc2ccefc08c119
font_04_sfnt_off00013d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D3D 16684 bytes
SHA-256: 4fb18f2f8d176c0c9ddf893a3a69c6eaaaf8ae8309617b6e07033971a2ed751b

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