Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3df65a7462a46b…

MALICIOUS

PDF

46.1 KB Created: 2020-08-30 06:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a8f83404a3cca5598b7c71a1e5116cb SHA-1: 23566265428f65229a92ac04781d67d03c7fc828 SHA-256: 1f3df65a7462a46b69ca797174a5dd6e92abb81cbe9e0ef41aaa3ad9ade721f1
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, suggesting an SEO link farm or a phishing lure. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body contains garbled text but also includes the malicious URL and several other URLs hosted on cdn.shopify.com, some of which are confirmed benign. The presence of numerous links points towards an attempt to manipulate search results or lure users to malicious sites.

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/wix?keyword=best+biome+rimworld
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/transformers_g1_all_autobots_and_decepticons.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/96541285142.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/multivariate_statistical_analysis_kachigan.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/david_jeremiah_revelation_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/elves_slayer_task_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdf
    • https://cdn.shopify.com/s/files/1/0433/8958/3514/files/jeopardy_powerpoint_game.pdf
    • https://cdn.shopify.com/s/files/1/0438/4122/4869/files/51509358093.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/5_pointed_star.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef6ba56d4eea44c08075f4e7a66b3900.pdf
    • https://static.usrfiles.com/ugd/07e02c_53470cda85904cf3831080113ccca86e.pdf
    • https://static.usrfiles.com/ugd/9374a7_85f461cda84342a49ac8aa6c336e7111.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e3f30dc7ec04e13856d12694b8d1fbd.pdf
    • https://cdn.shopify.com/s/files/1/0432/7112/7206/files/fekugax.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/52969928486.pdf
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/jovisufisaxikukiwotafa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4665/files/ascending_and_descending_order_worksheets_for_ukg.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_off000077fc.bin
3c4036474ae5f55b9d0a16f22ef80f1d2caa47a379b84eaf0746437944bd0688
pdf-font-stream PDF embedded font (sfnt) at offset 0x77FC 5040 bytes
font_01_sfnt_off00008912.bin
93e78c3e5d3646a4c3399339ca951b8c80ad87d80d29c570069ee9d149112c2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8912 9988 bytes