Malicious PDF — malware analysis report

Static analysis result for SHA-256 588c48902256b9a1…

MALICIOUS

PDF

49.8 KB Created: 2020-08-10 13:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722bcd40b6a3c3f4da16707b7e247d58 SHA-1: 74ec304b715210192dbf31e06db56cb0f18d4e30 SHA-256: 588c48902256b9a12992cef514da9571d2160ea295b5eb135807a06f5295162b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many pointing to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=pdf+blob+angular', suggesting a phishing or malware distribution attempt. The document body text, though partially corrupted, includes references to 'pdf blob angular' and the wkhtmltopdf tool, likely serving as a lure. The presence of numerous Shopify links, while individually benign, contributes to the overall link farm characteristic.

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.ru/pify?keyword=pdf+blob+angular
    • http://megak.dobetterwhatyoudobest.com/uploads/1/3/1/3/131378950/46792872fa740d.pdf
    • http://sumuw.magicmediabox.com/uploads/1/3/2/6/132683071/4045952.pdf
    • http://nubegetom.davidcmahler.com/uploads/1/3/1/4/131482995/6251863.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/75785759048.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/xenuxukogejijenax.pdf
    • https://cdn.shopify.com/s/files/1/0437/5986/1909/files/92385509399.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/95987000239.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/wopidodinatunod.pdf
    • https://cdn.shopify.com/s/files/1/0430/3545/9738/files/guwopololijivedetit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/mapebinadapakizolifik.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/bopimo.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/befakawudiketurunifuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.pdf
    • https://cdn.shopify.com/s/files/1/0440/9583/2216/files/goxelaxusakuwujibajek.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/map_of_equestria.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074f2.bin
952f6f4becadcb4a91052da9ea1511ba4f4371e9f3b7ab0cc734b525dbb0d091		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F2 5036 bytes
font_01_sfnt_off00008620.bin
1b59eb6fc36eaa6d87e659f4792e8fec4c8d880f2eea3aece77185ac71fb891e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8620 15924 bytes

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