Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba0d639220cdcf8…

MALICIOUS

PDF

45.3 KB Created: 2020-11-09 08:37:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f1539edacefbf023f5b77bfc0ddce0ef SHA-1: ee9d0f7bf5a599a532ccf41639db8d1cfea413b8 SHA-256: 6ba0d639220cdcf8a36db9eefbc49757160d7c300b54a3503b4ccbae2772c78b
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=watch+wrestling+aew+full+gear PDF link annotation
    • https://lokenomosotim.weebly.com/uploads/1/3/4/4/134499182/4256553.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/murum_sugiz_natonajafikutiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453337/normal_5fa58d48bb5df.pdfIn PDF document text
    • https://vumuzasal.weebly.com/uploads/1/3/4/5/134586685/3160967f.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/tafata.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/vavale/gukisazaza.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/war_robots_hack_client.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/uc_browser_apkpure_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/biozone_ib_biology_model_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/91085932712.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/australia_map_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/dna_rna_and_protein_synthesis_test_review_answer_key.pdfIn PDF document text
    • https://mujobopedixe.files.wordpress.com/2020/11/jetanizivepakegoluw.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/snakes_and_ladders_board_game_template.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_off00006fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC4 5248 bytes
SHA-256: 4dd0358aa0af8d6ce1a17a5f1afbb34a5e21efb389bf9a4f70b02926f2768b42
font_01_sfnt_off000081b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B6 11212 bytes
SHA-256: 3e5434f003d82e7e8266c8267f0d7cb0d4c3e3cbd567fb0838941d7ce96c6016