Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ccfae00b23f4c71…

MALICIOUS

PDF

42.2 KB Created: 2020-09-06 01:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 044618692084a4fc76cb0fd66446e390 SHA-1: 2aedb054b44510f852445d13bb0be9a05074dd42 SHA-256: 1ccfae00b23f4c71afa0234d7f7c141a183d150e96c4124bd22d6d0b87c58fde
202 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.
  • 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.
  • 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/wix?keyword=whatsapp+gb+anti+ban+latest+version In 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/1/0429/5059/0627/files/human_resources_management_report_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/fidipububuxavafugifivaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7500/9698/files/33620213183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/gumaxajesemifubap.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9a426a6cc3fe4ec7ad809115e269e1a9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1108c_77d439103880403aac1f842b5ae23863.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5efe5833b3c54858ac7df3b96a4a7ffc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/13ae68_14c4d712b6d741d4936d0eb9e5d0445e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0d2908_0441c95d9ad5472c82a736ab5ccb7320.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/02631b_5b1c1dd5d9214e54a88cce10af325a7a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b0045a5acf644ecd8e81c7dd61163492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/jelovetokig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/76581524612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/sudazokawufilidexaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/jufofozer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/ziwuwewajuf.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_off00006746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6746 5292 bytes
SHA-256: afdb603117e48da6c7dd57125a2b4d620a5676c55064f7b2c70e2a22d316bd7a
font_01_sfnt_off00007953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7953 10012 bytes
SHA-256: 49e22f5ed1beea78ca78965efc0109a86f9da7665c8521e39b8b48647f4352f0

Open this report in the interactive analyzer, or submit your own file for analysis.