Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab0372d65fbf4d0…

MALICIOUS

PDF

53.9 KB Created: 2020-10-04 00:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 10900821b1814e76533f252252580dc2 SHA-1: b3812a97ddc6c7022019a01535c691e1ab25d6ef SHA-256: eab0372d65fbf4d058aa87f57c950dcc38ddbaa088c4a6c5fdddda7b2e8836b1
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=avee+music+player+%2528pro%2529+v1.2.73+premium+.apk In PDF document text
    • http://files.foundantiquesde.com/uploads/1/3/0/7/130739239/bonikowogaxunaw_fivegadivok.pdfIn PDF document text
    • http://files.yeonkyungjeong.com/uploads/1/3/1/8/131871535/jesufobokupodex.pdfIn PDF document text
    • http://wazizin.seasonsbyrnb.com/uploads/1/3/2/7/132712315/4860810.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/ecdb20a1-4b08-47d0-8e7f-84f2bf8ca857/liporiselopovejajap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e086cc86-ad81-4488-9d0c-ea823fdf06cb/64547969940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f50e8a1-0696-4d8d-9ec1-2d2b7a2fff8d/66439729266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09276429-6721-4472-b051-6459757a0550/43434704214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d43dc53-ee6e-4f65-b893-37dfabbb1f50/57607201671.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37e6759d-9900-4298-89b7-3c98823aa4fa/48480620666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8609fea7-3871-479f-8d88-511c88b69e77/vovefivixinedede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f04f126-ee5b-4251-96ad-e67ff81fe409/53898920218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c16464a-b94e-41d2-a703-42c4179bcea4/40494554294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5778/2690/files/what_is_hesss_law_apex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1371/3315/files/north_dakota_state_wrestling_tournament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/dont_speak_movie_review.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 5908 bytes
SHA-256: 6baa54999daad29b1490317ce6326052b8758be153c9e1a096e61bc65feecc1a
font_01_sfnt_off000084bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BB 15620 bytes
SHA-256: ae58b7c36ca79bc7f9cf32606528805b6a1915219da93d963dbea7ec55b1850f
font_02_sfnt_off0000b544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB544 16144 bytes
SHA-256: 09b6aeec409553c79ef4dc896bf37c5b640861437b0839ada6985bb8edb16253

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