Malicious PDF — malware analysis report

Static analysis result for SHA-256 04798e4aea5372f2…

MALICIOUS

PDF

42.1 KB Created: 2020-11-06 03:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ae025870a3c417ded453e32051785040 SHA-1: 2d2175a2054c9eb105e01ea2eae4d5bdb16f81e8 SHA-256: 04798e4aea5372f233f93e2382fa7e65e91bde8cbafc0697b6867876396bc762
96 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?keyword=bee+swarm+codes+that+give+you+eggs+2020 PDF link annotation
    • https://gusobenatidisa.weebly.com/uploads/1/3/4/4/134475091/podusididuxuramasuv.pdfIn PDF document text
    • https://sunuzokelegawo.weebly.com/uploads/1/3/4/4/134476032/3310c2474e.pdfIn PDF document text
    • https://lugagixoweliw.weebly.com/uploads/1/3/4/2/134234548/be1fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5f8d712fbb81d.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/gopuze/excellent_english_grammar_book_class_12.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/borderlands_pre_sequel_gibbed_mission_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/proform_xp_130_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf3dbc5-afee-4aea-8656-9cbd3a911480/download_bluetooth_app_for_laptop_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/pubugixofatupelujeto.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/ssh_rd_rev04b_iphone_5c.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/mifuvuwageve.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/wawitipidijokigakiloju.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_off0000615c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 5896 bytes
SHA-256: aa3e9b65f663fb38cf986c07b3488c53c848f99ea69dd462f3190035614d0cf9
font_01_sfnt_off00007564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7564 11488 bytes
SHA-256: bddc2281d7d11c35cad0a9afefecb0e194801976c6fe4ebcf0faf76d823e8824