Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6a4fd0f8c7139c…

MALICIOUS

PDF

50.0 KB Created: 2020-11-01 08:22:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 47d4bdcaa05123c8461b6a1e3804ee71 SHA-1: 74039ab2dfc4546aef4e44376b0497837c1eac8d SHA-256: ba6a4fd0f8c7139cca9086bb4acf6cc63a6b2ebddb4f569b1026066275df24e0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/aws?keyword=true+religion+yahoo+answers In PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/a2089410.pdfIn PDF document text
    • https://rigitugatelimo.weebly.com/uploads/1/3/4/1/134131632/mijenazixomamu-nofafudonexa-nigitimavareta.pdfIn PDF document text
    • https://dexatasudawuge.weebly.com/uploads/1/3/4/4/134477966/godevux_wirukalal.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/henghuili-files2/integration_formulas_for_bsc.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/crumbs_from_the_table_of_joy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa0eb0d-cce9-48c1-855d-d5cf78b48363/boombot_mini_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/rezoxogowikuf.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/flat_belt_drive_calculations.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/adding_subtracting_multiplying_dividing_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/custom_car_flags_wholesale.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/the_living_environment_2015_review_book_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3669/1610/files/fortnite_nvidia_bundle_redeem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7526/5204/files/noroot_data_firewall_download_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/form_and_space_interior_design.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/93358490667.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/mekidufozo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B9 5092 bytes
SHA-256: 938b85db1dc09086b53a4a8b35d685b75033e703970e598807cc9f94f831c7fe
font_01_sfnt_off0000941c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x941C 11704 bytes
SHA-256: 0734f8473792536b8525cc0175051dc9894eda90a2846ac6c1eed991744f4f64

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