Malicious PDF — malware analysis report

Static analysis result for SHA-256 02041d7bf0aa4f5c…

MALICIOUS

PDF

37.7 KB Created: 2020-10-01 00:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5fa5ea7469a4c192c42bc6dd38e9922f SHA-1: 3d58a57a59303a62ecc6eaeee306ccf688dc62a3 SHA-256: 02041d7bf0aa4f5c20be638c4c2f5fb765d335e5c715a718ca16343a0dd9849f
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://ggtraff.ru/strik?keyword=a+view+from+the+bridge+mcdonald+pdf In PDF document text
    • http://files.clairethurlow.com/uploads/1/3/2/6/132682976/sisagefegirorel.pdfIn PDF document text
    • http://files.lexingtonlawncarepros.com/uploads/1/3/0/8/130874413/8660776.pdfIn PDF document text
    • http://vatiwof.pattysweetcakes08.com/uploads/1/3/2/7/132712109/5157304.pdfIn PDF document text
    • http://files.sunflowersandmountains.com/uploads/1/3/1/1/131164238/gajupidasateje.pdfIn PDF document text
    • http://files.bacdox.com/uploads/1/3/0/7/130739301/kolipumozegew_paxizeki.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://uploads.strikinglycdn.com/files/2412e527-315c-49e0-897b-f3970df34129/xejosaxivilepugeledigegez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37d56a1-bcb3-4deb-bcb8-49045821747f/wixigobebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dae7ac9-971c-4b95-a06c-0c0d1731d3a8/zifosimeluduwunoxerova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c12374-9ad5-4c23-8800-58c5313e152f/66539892156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8551/3379/files/69008204997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/besotaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/punjabi_movies_list_2019.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_off000047a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A7 5460 bytes
SHA-256: ad3e841180f469c96488ff40ec6333ed1dd6a8fe5bebbe94ed42241f0d244587
font_01_sfnt_off00005a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A21 9896 bytes
SHA-256: c08cce89be74891be613d4f02253cca7c4aeb730fe909ac834255a21677dac7f
font_02_sfnt_off00007c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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