Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ec798aab55f8ee…

MALICIOUS

PDF

52.6 KB Created: 2020-08-23 18:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95c929d8b8ab42b83ed0f42da36f49ef SHA-1: 1245cf8bb8310a5d63b60325efda95b3a5ecaf29 SHA-256: 57ec798aab55f8ee128872bc1a3069dc6a31d210f1b6b398d6263c992b419bd0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector to ttraff.com. The document body, though obfuscated, contains the URL https://ttraff.com/pify?keyword=lol+auto+chess+cheat+sheet, suggesting a lure to a malicious site. The presence of numerous PDF links indicates a link farm strategy, likely to obscure the final malicious destination.

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.com/pify?keyword=lol+auto+chess+cheat+sheet
    • http://nedab.carolinacavaliers.com/uploads/1/3/1/3/131383664/33e5df5b818.pdf
    • http://files.mcgrewwoodwork.com/uploads/1/3/1/8/131856232/4bd4a4b32e21b.pdf
    • http://files.handymantoledoohio.com/uploads/1/3/1/8/131856277/tanov_lewinosor.pdf
    • http://xakide.simpsonchorus.com/uploads/1/3/2/6/132696067/2978f697de79.pdf
    • http://files.niagaracentrendp.ca/uploads/1/3/2/7/132710621/zukegapekasaxu-nivirub-bawuwoponavofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/73385054431.pdf
    • https://cdn.shopify.com/s/files/1/0429/0697/6422/files/zabexu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/lowes_muscle_shoals_al.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/xuvimaxekifuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/zujaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/69826213793.pdf
    • https://cdn.shopify.com/s/files/1/0462/7211/8941/files/galodolixew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/billie_s_bounce_bb.pdf
    • https://cdn.shopify.com/s/files/1/0438/6678/3904/files/atlas_of_abdominal_wall_reconstruction_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/pilubuzekeveligawopise.pdf
    • https://cdn.shopify.com/s/files/1/0432/8230/1094/files/goldman_s_cecil_medicine_twenty_fourth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5355/files/riledinunovexaso.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_off000085de.bin
3c1025e445976c1ae59904012875be3845c8178f4510afa711d4941f4c28d094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DE 4732 bytes
font_01_sfnt_off000095ea.bin
2c7942de3705a9e348a9e850e7904ad92bda9e29bec336e21b382f87d4cb13c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95EA 14596 bytes

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