Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06fa3b93eed445e…

MALICIOUS

PDF

68.0 KB Created: 2020-11-03 01:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c3c8eff1a8db33eaea3e9526793f3972 SHA-1: 1cec909841900aff60fd975db5a7d171c4df7883 SHA-256: e06fa3b93eed445eafd1a75bda5348c964e30f4601358f04d47e236dca74d909
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to trick users into downloading potentially harmful content. The document body, though heavily obfuscated, contains text that appears to be a lure for a "death certificate rar" file, further supporting the malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.cc/123?keyword=ice+cube+death+certificate+rar In PDF document text
    • https://gawubodukajine.weebly.com/uploads/1/3/0/9/130969599/9970137.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/7797861.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/7041568.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zasepo/66620010925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1833/0534/files/84478610082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/tcby_nutrition_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da6b15b7-6f3f-4306-a4bd-0a2f848db9aa/gejop.pdfIn PDF document text
    • https://s3.amazonaws.com/jedasaber/dewalt_cordless_drill_owner_s_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/top_man_mega_man.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9055/1977/files/hedge_hog_book.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/algebra_age_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1455/9146/files/2625607564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9812/1388/files/pivurabixijipo.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_off0000cc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC24 4976 bytes
SHA-256: 681c2c3b35fa7195dc2aa0eff011c64358ea535a8f27ac4511212644aec087e7
font_01_sfnt_off0000dd08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD08 11344 bytes
SHA-256: 439f3950b69c8dd998664acef6ff8c81355ba049f634afea482cf94dfbdda49e

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