Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6071d8521a651b1…

MALICIOUS

PDF

43.4 KB Created: 2020-08-31 22:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63ffa3e1609d8cbba06416b7886ec62a SHA-1: 35f5d30d8ca4e5a5beb5b0b427585e99751dbf97 SHA-256: d6071d8521a651b1307e7befae4d55fe91f3ca48f46b3e0f7ece9ed29ad26d90
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Top 5 astrology apps for android' and the malicious URL, suggesting a lure to a potentially malicious site. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy, likely for SEO manipulation or to distribute further malicious content.

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://ttraff.cc/wix?keyword=top+5+astrology+apps+for+android
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/rawulidaredokobakape.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/sonetimumegiwogoxesos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/neseviguwaduzavur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/52054845206.pdf
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/bapatiretob.pdf
    • https://static.usrfiles.com/ugd/33ab24_964e3d2171e5494ab83640ea7c059e5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd3f338279524cbdb4d0238203f1e331.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf6d042501604a5ab710fa21e3333053.pdf
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/71948100304.pdf
    • https://cdn.shopify.com/s/files/1/0459/9942/3647/files/momufuzokivagusafof.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/87917600635.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e57.bin
81d88576966cde68f6fd6cf3f4902b4d324b06f09b81c9319f2514feedd3c3d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E57 5052 bytes
font_01_sfnt_off00006f92.bin
4d2852d131d0965a0f9faaf3438df2fe7d223643b095936fc72bb884d8121960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F92 10224 bytes
font_02_sfnt_off00009294.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9294 4324 bytes

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