Malicious PDF — malware analysis report

Static analysis result for SHA-256 090564069c114dab…

MALICIOUS

PDF

53.3 KB Created: 2020-08-18 19:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e83cbb96f3df2fcd06b8310be15e21dd SHA-1: c647a696cf3d6648f6eabb8ae4c389808208f757 SHA-256: 090564069c114dabc6064b50672976fcdfec56e7df41cff95167a60f3da1b5b8
154 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded external links, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=best+beat+rap'. While no scripts were extracted, the sheer volume of links and the malicious redirector indicate an attempt to lead users to harmful content, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=best+beat+rap
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.pdf
    • http://files.msportsix.com/uploads/1/3/0/7/130776037/vixotanimavava.pdf
    • http://newesupo.californiaskys.com/uploads/1/3/1/4/131407406/xilama_makiguwi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/22368055188.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/lenevanenunoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/gokepizelezabig.pdf
    • https://cdn.shopify.com/s/files/1/0429/0949/9558/files/jagosotemuzefesipuwuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/icao_annex_2_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8674/1655/files/vafeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/collingwood_college_camberley_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/6346/0508/files/lulagawav.pdf
    • https://cdn.shopify.com/s/files/1/0438/8408/5416/files/74034562581.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15501301831.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/2004_honda_accord_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ea7.bin
1141b726dab8c53367c96a6ab19d24f5d5abd6d899a1e6e7f5933253efb9f193		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA7 4968 bytes
font_01_sfnt_off00008f97.bin
b645cd976a0b8543d9c0ad51d9ff54b1ead3ca62f3db39e964a82e8423a32ddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F97 10308 bytes
font_02_sfnt_off0000b318.bin
184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB318 16120 bytes

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