Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e332171e0133794…

MALICIOUS

PDF

50.3 KB Created: 2020-08-19 00:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 10f7ecbc90340e746f5913ebcb796c70 SHA-1: 069cae4d9552a38775f80627a31fd92f18c1ef4f SHA-256: 7e332171e01337940ae102db9a17e9c8a443cfdac52e81de55b312b6449dc4cc
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://ttraff.cc/pify?keyword=streamlined+energy+and+carbon+reporting+guidelines In PDF document text
    • http://files.getacuity.org/uploads/1/3/0/7/130740148/89cd1a08.pdfIn PDF document text
    • http://files.ntohosting.com/uploads/1/3/0/7/130776257/movolukawikepa-tumexumab-dikelorizo-pejalel.pdfIn PDF document text
    • http://zofixoru.axishawaiiarchery.com/uploads/1/3/2/6/132681670/9eafea19.pdfIn PDF document text
    • http://files.housenbuildings.com/uploads/1/3/1/4/131406811/162f058c9bad612.pdfIn PDF document text
    • http://files.pegasosaddleryandleatherwork.com/uploads/1/3/1/0/131070539/43071bd64.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://cdn.shopify.com/s/files/1/0440/5015/3622/files/pathogenic_microbiology_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4423/1575/files/59668178567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/technical_analysis_for_dummies_2nd_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/5516104442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/refer_annexure_e1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/61956838389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/basic_computer_course_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/hummel_price_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/kisikotalusejudakewigug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2507/1256/files/sijofefiwetud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2582/3904/files/download_kisscartoon_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/self_assessment_property_tax_form_2020_20.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_off0000776b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776B 5620 bytes
SHA-256: 9f84e1b94a8cbdde6822701bc188290de4330265b09bec6abe387c821a2db703
font_01_sfnt_off00008a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5B 10316 bytes
SHA-256: 0ddf008177ee83b6cda536c653a26766267b0548f2d7e21fa4c098fe01495a1f
font_02_sfnt_off0000ada0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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