Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e9bd2644ca7c15…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 00:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 052b5b5740c03e1e284e762a4d795d53 SHA-1: 3adbd7fab48353518c32d847fcc40122138f5bfa SHA-256: 31e9bd2644ca7c150c63ac902932bb5befc0f8c13828eb868e74b709295f10ee
128 Risk Score

Malware Insights

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

The PDF contains a prominent call-to-action button and embedded text referencing 'Cricket captain 2019 apk', aiming to trick users into clicking a link. The primary link, 'https://ttraff.cc/pify?keyword=cricket+captain+2019+apk', is identified as a malicious redirector. The document also hosts a large number of other PDF links, many pointing to shopify.com, suggesting a link farm or distribution mechanism.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cricket+captain+2019+apk
    • http://files.kathrynkohorst.com/uploads/1/3/0/7/130775970/ed65c6943f13.pdf
    • http://files.thebrockenhursttaxis.com/uploads/1/3/1/0/131070342/gipow-toxiguxakovi-vefatig-zozuxonuref.pdf
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/kaplan_step_2_ck_videos_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/3732977613.pdf
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/dekonitidatasoziziz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8563/files/let_me_love_you_mario_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/limupubibitan.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/genetics_of_sickle_cell_anemia.pdf
    • https://cdn.shopify.com/s/files/1/0428/5657/9228/files/sexeroboduxukuze.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/vepifabosudosolukupemodo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/46057682443.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/kometex.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_off00005c9a.bin
82b8c420dc44d19d6959444900f722f02fab604d3b04224ec58ab3d0a034e0e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9A 5168 bytes
font_01_sfnt_off00006e43.bin
df9b35e38508f2d33a81a5bf661e9a4077c11ed79dd811f82ec09b9c7e039f59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E43 10524 bytes

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