Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b255a453408a79…

MALICIOUS

PDF

58.7 KB Created: 2020-08-31 16:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a92855fc3429621904d072d20c083cbe SHA-1: 9fdd0fb4f2d83bb63fc27fe86707e4796042c0a1 SHA-256: 68b255a453408a79ea37df72a26d2b10956c108eb49153b9113acd4e99aac279
154 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Euro car parks appeal template' and embeds a URL pointing to a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document is designed to redirect users to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interaction, likely through a social engineering pretext.

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/wix?keyword=euro+car+parks+appeal+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/all_i_do_is_win_clean.pdf
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/geometric_forms_art_lesson.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/wisafatilif.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/zifam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/poweredge_r730_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/blackhat_badger_sekiro.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/mixovunesus.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/21513308039.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/82266324730.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/vawexidifepomi.pdf
    • https://static.usrfiles.com/ugd/16a96a_709578a3f4da43ae88676f26f3ccf061.pdf
    • https://static.usrfiles.com/ugd/69b86f_830baac5d83343149e56cf94f6fd0353.pdf
    • https://static.usrfiles.com/ugd/b8c837_1090561acb51407e9a75fb0299b9f7d8.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c64.bin
aa19d299e0af08ee5bc90ce7fe2abbbe2ffe9509366235a0b1a92682061af1b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C64 4828 bytes
font_01_sfnt_off0000acdc.bin
721598a0a7419cefd5c72c42733cc3217a79f4241fa1f72795051b193340b9e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDC 10144 bytes
font_02_sfnt_off0000cf96.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF96 4324 bytes

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