Malicious PDF — malware analysis report

Static analysis result for SHA-256 df305db99ac46916…

MALICIOUS

PDF

40.2 KB Created: 2020-09-01 01:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65b86781ec8c70b43028d4d7cd4937c1 SHA-1: 730ce9cd6a56be98e3eb819f422232d30d20caed SHA-256: df305db99ac46916c33c354c69e73845e2b11c35446d777e99dfdc6cf1f309a2
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to the presence of a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=manualidades+caseras+faciles+y+utiles'. Additionally, the document contains a large number of embedded links, forming a link farm, with many pointing to Shopify domains. This suggests an attempt to manipulate search engine results or distribute malicious content through a network of seemingly benign links.

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/wix?keyword=manualidades+caseras+faciles+y+utiles
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/1829329269.pdf
    • https://cdn.shopify.com/s/files/1/0435/9946/2562/files/98982554862.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9250/files/89390914601.pdf
    • https://static.usrfiles.com/ugd/d775a9_7cdc26b2ca6c4491840a79f504416fa3.pdf
    • https://static.usrfiles.com/ugd/b5472a_c5ef1664911f4fb98e1ad9770d79a894.pdf
    • https://static.usrfiles.com/ugd/3aee12_e0353a5c41bf489fa31be806f6dc761a.pdf
    • https://static.usrfiles.com/ugd/0d2908_5beeef57bb1d44269578e030f30cc134.pdf
    • https://static.usrfiles.com/ugd/d4da64_a02de5a66d9e4d6bb6d361826498d807.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_e878bc0d7a0a462e8c7a0bf49e79afc5.pdf
    • https://static.usrfiles.com/ugd/b916f4_7f446bd822204c80b0e18d71cf4a84be.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/22289037708.pdf
    • https://cdn.shopify.com/s/files/1/0435/0679/4656/files/infinite_geometric_series_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/punelerutonuvukasiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/37872859827.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/calculus_1_topics.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_off00005d6f.bin
25e5b2729cff2403fe78b73fa0f2bd98af243b19135b73703d1602c9058b87a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6F 5124 bytes
font_01_sfnt_off00006efc.bin
0d4afc61bf65512c77e27775664559b98437d05c9543b8f8143555504d609cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFC 10904 bytes

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