Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00bee451d7b3ecb…

MALICIOUS

PDF

49.5 KB Created: 2020-10-05 00:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5b20bb76375895093c60f4aa3b20fc2 SHA-1: f08b027265db086dbf73c892ed7b57d722f1387b SHA-256: f00bee451d7b3ecbaf958d3cdbe75e911e6ca391afb9d0bc0c6cf474daafa1b1
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://cctraff.ru/pify?keyword=soleus+70+pint+dehumidifier+manual In PDF document text
    • http://xibaler.hopesfavoritethings.com/uploads/1/3/1/8/131857204/9466584.pdfIn PDF document text
    • http://zawag.rolandoguy.com/uploads/1/3/2/6/132682990/wufajovesolene_regibozugobelog_nurizu_xevavexazone.pdfIn PDF document text
    • http://files.growingthroughlosstcsouth.com/uploads/1/3/1/4/131407511/2b684031add8.pdfIn PDF document text
    • http://zolujinid.spanishhorsebreedersuk.co.uk/uploads/1/3/1/4/131453501/mawivotulisure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e329b264-7502-45e5-841e-877c1ea89b62/45919625347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6bd55a8-b564-44e1-92b6-3aa70069c8f6/45016645076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca8e221-8021-4acc-add5-070f2698cd9f/simunifoniwotolipabolumox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b9c0288-0eec-4705-9778-05acfdb0c55c/gisazodavelaguvivalas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2486/2365/files/leather_craft_ideas_for_her.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0511/6575/files/the_little_darlin_bar_austin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6664/0534/files/likiwefevepagawowemab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7088/4502/files/gekazovonezetekopoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8583/7989/files/deduvaxiwurimasodugidefal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9678/3514/files/potassium_sulfide_lewis_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0670/0963/files/14194489350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8008/4384/files/fanatux.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_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 5604 bytes
SHA-256: e4d5581a55a923246b2b8842cf851b196df2c6073e20ce255d580c12d1140b7e
font_01_sfnt_off000094c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C3 10524 bytes
SHA-256: 1dd2866ddf396aada24841a1d79aaffaff24e391b58da07df808e03e0f7a88ab

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