Malicious PDF — malware analysis report

Static analysis result for SHA-256 498ed6b4a9535d28…

MALICIOUS

PDF

41.6 KB Created: 2020-11-01 01:21:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb532a23a17d41219910390f85546cb8 SHA-1: 1d54a3e98649f198599798e8126ba657bff20358 SHA-256: 498ed6b4a9535d28c8467cca61997d5b9643c75890df52ec02705584b0fd9e15
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, including a known malicious redirector. The document body, though heavily garbled, contains text related to a game and a URL that matches the malicious redirector, suggesting a lure to trick users into visiting potentially harmful sites. The presence of many PDF links and a malicious redirector indicates a likely SEO spam or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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/aws?keyword=how+to+complete+riddle+school+1
    • https://zafigitelerom.weebly.com/uploads/1/3/4/3/134338481/jaxape_wijizexuzif_penat_zalivi.pdf
    • https://torawatuxopo.weebly.com/uploads/1/3/4/3/134379163/4e84d.pdf
    • https://penepanixefi.weebly.com/uploads/1/3/4/3/134354239/napasutijulikeduxi.pdf
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/digolekuweguvor.pdf
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/a77ec655fc.pdf
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/7d574c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0500/6783/3018/files/rawitutetawimefoz.pdf
    • https://cdn.shopify.com/s/files/1/0506/8711/5433/files/alexander_the_great_what_did_he_look_like.pdf
    • https://cdn.shopify.com/s/files/1/0496/6848/9373/files/simple_human_soap_dispenser_user_manual.pdf
    • https://s3.amazonaws.com/memul/86807678977.pdf
    • https://cdn.shopify.com/s/files/1/0508/0658/7577/files/miracle_math_harry_lorayne.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3493/files/56984522279.pdf
    • https://cdn.shopify.com/s/files/1/0506/2967/3117/files/first_ionization_energy_of_period_3_elements.pdf
    • https://cdn.shopify.com/s/files/1/0438/1379/8050/files/font_ch_chc_mng_nm_mi_2018.pdf
    • https://cdn.shopify.com/s/files/1/0496/0616/4632/files/novibituvilufebujasopo.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008088.bin
b9e55a38b5d6e88f92c7f1b56a5b24b8ad5da5aeba2935080290c964b89ff6c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8088 5208 bytes

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