Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7edc07cd1c3139…

MALICIOUS

PDF

80.3 KB Created: 2020-11-29 08:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 610ebfd19f0234b04a06e429d8cfaa8b SHA-1: 14c93dc8a3ac2a2d1d79058a22d7c9c2911905d8 SHA-256: 7c7edc07cd1c3139ef63d4117e79fdbedf19263443d5311cefa9ba48cd433888
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 0.9995

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://cctraff.ru/aws?utm_term=cavernous+malformation+histology In PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/judujovonametitagid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_5f8f4e4ba08ad.pdfIn PDF document text
    • https://niwejeru.weebly.com/uploads/1/3/4/3/134308800/nixitegilamije.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418574/normal_5f96df97e272d.pdfIn PDF document text
    • https://xelipifexejup.weebly.com/uploads/1/3/4/8/134848770/sorewojiveruni_tugojamuvomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447626/normal_5fae710b672d5.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/simujix/38255488608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ac43721-fb2f-443b-bab2-01982b8d6a5b/ufc_undisputed_3_registration_code_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/xisoweluvagos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f869085d-c637-40f6-b207-7e33f235e153/jexapasunusipemel.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF103 5248 bytes
SHA-256: c37552ca2f7f999db1f1a43606ab0ca4df4be67cd9b624e9e4944a84e57e6739
font_01_sfnt_off000102bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BB 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00010e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1F 11284 bytes
SHA-256: c27c9353d849bb25baae76db3dce786ddd5671be5c260ee2ef89356dfd59b6c5