Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8afc12335e910b…

MALICIOUS

PDF

43.8 KB Created: 2020-08-31 02:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 408693d80faa415e6a6daaa6e089077c SHA-1: 92228b263ba5aec5bdf24dfec477d7479b9dc314 SHA-256: 4a8afc12335e910ba3ab5f3dd43169380fc24a0d07ee20ef84f91077c1d5c394
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as search engine optimized content, likely to trick users into downloading further malicious content. The primary URL, https://ttraff.com/wix?keyword=autodesk+3ds+max+tutorials+pdf+free+download, is flagged as a malicious redirector. The document body contains garbled text mixed with URLs, further indicating a malicious intent to disguise the true nature of the content.

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=autodesk+3ds+max+tutorials+pdf+free+download
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/duzurisetolozulozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/fairly_odd_parents_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/4605/1744/files/atrial_fibrillation_icd_10_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/8096/4509/files/online_to_excel_converter_ocr.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/20472667161.pdf
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/kufavemivik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/cobb_county_animal_control_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/husky_tool_box_parts.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/2036587087.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/mesunupi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/gokolavusenenosakiko.pdf
    • https://cdn.shopify.com/s/files/1/0439/0292/7003/files/constructive_anatomy_george_b._bridgman.pdf
    • https://static.usrfiles.com/ugd/5ad03d_2fec89abc1514084bfb045d4efc1bc32.pdf
    • https://static.usrfiles.com/ugd/b8c837_84d00b0aba554ca59aefe89adaa1aa86.pdf
    • https://static.usrfiles.com/ugd/704566_afe29d7dc02f4ecda87a684cd7be58c1.pdf
    • https://static.usrfiles.com/ugd/1cfe37_c9208a3af77d45478646d5078eb2c2cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_f54f9318435f4cac88e1bd6d3ad48bfb.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_off00006d89.bin
1e44390ec3747718a95a77e71f80460f49239f3e942907b2f456ef675736b813
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D89 5564 bytes
font_01_sfnt_off0000807a.bin
ea2f1c656a84af60767986fbd6bbea2cb1e66ca3c81bdf5b6b041b2b5ae58411
pdf-font-stream PDF embedded font (sfnt) at offset 0x807A 9864 bytes