Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace3b89b3d687a54…

MALICIOUS

PDF

46.6 KB Created: 2020-08-14 21:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: dd154d3ea9c1743a35eeb15a961e0291 SHA-1: 2a1f0db0e20f845821b974a9d757ef11996354b8 SHA-256: ace3b89b3d687a5408746043fa8c4bd42edae39bc933e6b83bc02232de45def1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'free swot analysis template google docs' and a URL pointing to a redirector. This suggests a phishing or scam attempt where the user is enticed to download a template but is instead sent to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=free+swot+analysis+template+google+docs In PDF document text
    • http://files.jenniferhainesmua.com/uploads/1/3/1/3/131381288/tamubil_lijifiwamizuzin_bidasel_vijevifalenosiv.pdfIn PDF document text
    • http://files.aceamsea.org/uploads/1/3/1/0/131071037/77cb066ef.pdfIn PDF document text
    • http://files.mimiarnstein.com/uploads/1/3/1/0/131070576/xokilexiwemes_doselewelu_sibupile_limuvori.pdfIn PDF document text
    • http://wezije.daniellegaffen.com/uploads/1/3/0/8/130874493/bedevadavamupor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/traveling_salesman_problem_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/7749628993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0327/9517/files/safurisureb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/15885743575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1729/0406/files/sofilalemevegugibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/28191205745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/binder_spine_template_1_2_inch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0013/3793/files/sentry_safe_instruction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/fimigop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/awkward_moments_bible.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_off0000788f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788F 5540 bytes
SHA-256: 253bc208bf771e829d9e8f8877cf946769e318303a20f227bd05f89e4481132a
font_01_sfnt_off00008b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B67 9948 bytes
SHA-256: 295ed095ef4802c1c3321989bb1cdadb74098fbbb41cac8cc6212b39e82884eb

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