Malicious PDF — malware analysis report

Static analysis result for SHA-256 30066fc9dc8fceab…

MALICIOUS

PDF

52.7 KB Created: 2020-10-03 08:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2682ea1eef61ce56b2f6346b25ce5717 SHA-1: 27c3562a717892cc989d5b493659225609ff5a7b SHA-256: 30066fc9dc8fceab28905e83ec2af949892cffd426a46738c8d9887e706b8649
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/strik?keyword=power+rangers+tabletop+rpg+pdf In PDF document text
    • http://files.strokefestival.org/uploads/1/3/0/9/130969717/085c482c.pdfIn PDF document text
    • http://files.fluidartcreative.com/uploads/1/3/0/7/130775221/2586536.pdfIn PDF document text
    • http://files.gimmethelodown.com/uploads/1/3/0/8/130873921/9063344.pdfIn PDF document text
    • http://jidana.forreelapparel.com/uploads/1/3/0/9/130969844/gubegumagulumib.pdfIn PDF document text
    • http://files.spicedforyou.com/uploads/1/3/0/8/130874241/13982a83d9.pdfIn PDF document text
    • https://site-1039203.mozfiles.com/files/1039203/88960084613.pdfIn PDF document text
    • https://site-1037114.mozfiles.com/files/1037114/vimelufevejaxuz.pdfIn PDF document text
    • https://site-1039460.mozfiles.com/files/1039460/kovavifo.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/1/0430/9529/4101/files/swebus_kalmar_stockholm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/snorkel_ops_release_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/67993235200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0446/4799/files/galaxy_tab_a_sm-t350_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2897/4234/files/42715198287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c420c229-6744-48d0-9f28-14c0a0027750/88415425201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e572316-b8d7-4e95-8a53-23c4dc1629b2/5084939672.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_off000083e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E7 5444 bytes
SHA-256: 305452953b9e904c412960d0473870ec709243c1c802603474284a142624d5ec
font_01_sfnt_off00009688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9688 15264 bytes
SHA-256: 65395061ed7422538957f3d1e71be4882e9b43c7f036c9be80bc8263f5aa8061

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