Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c07dafddc55d5e…

MALICIOUS

PDF

45.9 KB Created: 2020-11-01 07:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 746c6b12b8f5dd537142b5239867564d SHA-1: daffae3b9b04942d6022734f6099e176e1e23d4b SHA-256: 73c07dafddc55d5e3ce7fa83c959ad11d3a45d81308b5616b92123c91f23346b
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 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=positive+adjectives+that+start+with+letter+r In PDF document text
    • https://gixapogaruxa.weebly.com/uploads/1/3/4/3/134331356/b313c439f0.pdfIn PDF document text
    • https://mikodetakono.weebly.com/uploads/1/3/4/4/134497144/ligad.pdfIn PDF document text
    • https://nulosogitizibe.weebly.com/uploads/1/3/4/3/134317173/zilekadameba-sipedakinijitep-wofatepewudoz-nibukuse.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/luxelula/bivalvia_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5706/0277/files/33524208537.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/answers_to_questions_youve_never_asked_free.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/bautagebuch_411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/lets_go_eevee_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55b4f6e4-76a9-4859-ae3e-8011fe89414c/45062376260.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/48507092094.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_off00006a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5C 4936 bytes
SHA-256: 30439dc5dab365258f5c1d6b52334914ff1bf0980ee657a2182cd8b3b2cf0e85
font_01_sfnt_off00007b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4F 9656 bytes
SHA-256: 7b6c9b5ffe9f8514e8408ea6ff6ff14561fc48c8c836c8318ad4634be5cc1766
font_02_sfnt_off00009c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C47 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230