Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9623f4fea04231…

MALICIOUS

PDF

45.3 KB Created: 2020-08-03 05:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ffea662658b0cfbc670e27581bf026b SHA-1: fe29418a4346ffe422d631f5c1ca0eb0d6b432cf SHA-256: 7c9623f4fea04231ff93e6f1243efce1f5cd3ba4d2586959b32ec771ccbfaad8
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, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure, and 'PDF_SEO_LINK_FARM' suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The presence of these links points towards a phishing or malware distribution attempt.

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/pify?keyword=key+and+peele+draft+names
    • http://files.firecracker100k.com/uploads/1/3/1/3/131380263/afe377feac32a.pdf
    • http://files.irishbavarianmountainhounds.com/uploads/1/3/1/4/131437815/2769574.pdf
    • http://files.fairfaxgammaphibeta.org/uploads/1/3/1/4/131407572/galosumupoxuridep.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/new_tmux_session.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1364/files/roadmaster_dunn_nc.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/rumejafodamug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/16910965031.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8887/files/download_creator_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/tepozudugotis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/kokerasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/gibiwasefuduxenod.pdf
    • https://cdn.shopify.com/s/files/1/0432/8577/4502/files/fukakipojodigojuzonub.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/63788769502.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/fozusav.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_off00007395.bin
651ce62ad93d2ebd76c21a36d5665fc64663455ff0b4339abe559b7f508ec5d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7395 5256 bytes
font_01_sfnt_off00008574.bin
f923c6a4cd23281929c4335d242bfcc9d4a2ec906d34aee5b4fd1c02ed0f4f4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8574 10304 bytes

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