Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe0f4b1ac08016e…

MALICIOUS

PDF

46.3 KB Created: 2020-10-01 13:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a7372c9c2c9209c18de0874fa2531e7e SHA-1: d910239d514ba4f745513e83d1dd22e3409d0161 SHA-256: 2fe0f4b1ac08016ecdd47bbbc22cb4b9887a7a8ff46d2ea0c552a333eb4ebefd
102 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The presence of a visual download button and the document body text suggesting a file conversion service further support a phishing or malicious download lure. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?keyword=chuy%25E1%25BB%2583n+pdf+%25E1%25BA%25A3nh+sang+word+mi%25E1%25BB%2585n+ph%25C3%25AD In PDF document text
    • http://zowix.woodlandsparkbaltimore.com/uploads/1/3/0/8/130874691/xuludivolaja_nezotoseno.pdfIn PDF document text
    • http://rozewa.benes.edu/uploads/1/3/2/7/132740280/e94422d80635.pdfIn PDF document text
    • http://gixapurif.wendy4fitness.com/uploads/1/3/0/8/130813305/nanitowovo_gowidanus_jolawokapak.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://uploads.strikinglycdn.com/files/d390c645-b4d8-47e8-b97a-2143ac0a8341/48171717846.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fcbbee0-63f9-4bf6-9eec-1bb2e9882a0f/24959381018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79b1cf64-4084-4354-a626-b6b4f14fb777/49965970644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/559d0197-3bcb-423d-8416-e20371399fa8/2944904758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff4bcd78-5299-4b62-848c-e9c34b77c228/dozadaxikekemawubomezuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/96_camaro_ss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3846/files/98600670959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9122/0887/files/74313791530.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_off000065b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B3 6116 bytes
SHA-256: 658a8107fbe578b6ceeac0a09711a77c97a5513eaddd95bf430820d995eb625e
font_01_sfnt_off00007993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7993 10192 bytes
SHA-256: e5c14af5a8bf84bef02bec620b00fc47762b064213e19d5cf645debfd38d34e5
font_02_sfnt_off00009c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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