Malicious PDF — malware analysis report

Static analysis result for SHA-256 4332e18f9a9e7ce5…

MALICIOUS

PDF

43.3 KB Created: 2020-08-21 16:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 3eb76b77e86fb62de117731c80cf9a8f SHA-1: 36cfd6ca4772bd2c038912e2e96e49d014924bf9 SHA-256: 4332e18f9a9e7ce5decd545c12ed21a7c087c071555f9cd85e588f04682d659b
170 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=autocad+2007++with+crack+64+bit In PDF document text
    • http://files.theoriginalsilverstarsound.com/uploads/1/3/1/0/131070604/mufebag.pdfIn PDF document text
    • http://files.nflpicks16.com/uploads/1/3/0/7/130739431/jabufufe.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/1/0432/7224/1310/files/guidewire_connections_keynote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/85228681762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/volume_and_surface_area_of_a_sphere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/82473039466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7423/1199/files/nifododefetapukokasulabom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5778/2690/files/31079437427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/gadavixefabedanufuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/60335579695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0397/7634/files/58033811947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/57119445072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0319/6070/files/blueprint_english_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/final_fantasy_7_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3901/files/jesazurixumevez.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF7 5356 bytes
SHA-256: c10061a94f3c7f771c787b2ea321e3dfb9a22c8dcd312b4ad58c1bcf85f16f23
font_01_sfnt_off00006f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4F 10196 bytes
SHA-256: 43909373e3df1a8473528c54f473db5934a3a6d1e0ee5663a87c30efe0f6d181
font_02_sfnt_off00009255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9255 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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