Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4524162809af2c7…

MALICIOUS

PDF

34.2 KB Created: 2020-09-10 06:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c02ff9d7a64aea02ec231b2efc42af8 SHA-1: 79709e79091950880bb667f0ac88ad988ac4368c SHA-256: b4524162809af2c76e513774edca1ce2620dd2c87deb524f70e7abce51339e43
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One prominent link, however, directs to a known malicious redirector at 'https://ttraff.me/wix?keyword=escape+room+game+answers+level+27'. The document body text also contains this lure, suggesting the primary intent is to redirect users to malicious infrastructure under the guise of providing game answers.

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.me/wix?keyword=escape+room+game+answers+level+27
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • http://kifetuxi.love-heals.org/uploads/1/3/0/7/130739660/xumosakunomivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sebifoxof.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/budojobenifurefax.pdf
    • https://cdn.shopify.com/s/files/1/0437/6012/4065/files/26379748229.pdf
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/jugujikuzukefoxamimelo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/47091509997.pdf
    • https://static.usrfiles.com/ugd/87b9a8_f60a0b016c4548438dfc6488a295c3d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f7f0af01df049569c709e5fac167af4.pdf
    • https://static.usrfiles.com/ugd/97aff7_41e7156e16214ec9aaf764b2996e86b8.pdf
    • https://static.usrfiles.com/ugd/a48928_11bcf6d7e88c416389949ae424fc0760.pdf
    • https://static.usrfiles.com/ugd/735424_aea56420c9054f35846501b91dfb752d.pdf
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/norazovapukofumaviluvud.pdf
    • https://cdn.shopify.com/s/files/1/0431/0617/3081/files/android_1_my_talking_tom_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/8756/0858/files/baixar_app_para_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/alexander_pope_biography.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/94960567838.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_off000048e4.bin
91ffba9d6bf4147d0d6cc018b870b22a983628991a766fcb600fe9eb731c6d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48E4 5576 bytes
font_01_sfnt_off00005bef.bin
feb089b8139406792bb618e3852003c1ab026ca7708ada6f2dc179bac7b19074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEF 9344 bytes

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