Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee4c53dfc907649…

MALICIOUS

PDF

71.1 KB Created: 2020-12-20 04:48:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 485bf63210cda26e74a18bdda89bf081 SHA-1: 1eb26b52d8933182b02b56f569a185e5bd96d8ed SHA-256: eee4c53dfc907649c0b82245294d49f3bbfda58e36d3d66ebd6d9779aa4dff3d
154 Risk Score

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 0.9998

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://cctraff.ru/123?utm_term=cuisinart+vanilla+ice+cream+recipe+with+eggs 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
    • https://static1.squarespace.com/static/5fdc7d305fcdb718a17c69c1/t/5fdcb06e7ff8e90c28ff2bec/1608298606596/vimikokuvonadute.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/lidatume.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/27783209753.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/bumosidavoka.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/94792744433.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/45664824032.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/bet365_app_free_for_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/pagafogovuduz.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/cannot_add_a_worksheet_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/51771302549.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67aea084698658e84b086/t/5fce12a774a40730fbbffcbc/1607340711789/infected_ingrown_hair_cyst_video.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/dutibuxidenugolemuxawowid.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfdc47a13a450babee0d2c/t/5fc2ae059d79364840e55e39/1606594055594/linelanipasuvasa.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/ways_of_the_world_chapter_10.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/88992513191.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9C 5292 bytes
SHA-256: ddaa120d7e5b5b5d0fcd9210d9bc207674e54706fe5043d6076241f8fb28204b
font_01_sfnt_off0000dd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD83 10412 bytes
SHA-256: c013b54e5ddb33d7b08f3addedb5d63dea6e1c7e6f782a2646a839c813d3c125
font_02_sfnt_off00010135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10135 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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