Malicious PDF — malware analysis report

Static analysis result for SHA-256 906698a9ebeee521…

MALICIOUS

PDF

38.3 KB Created: 2020-08-25 10:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e38b6728d9247a63b221be0493739a3 SHA-1: 8a2febaecfe7616b602e0a1295c1dac4f5c64488 SHA-256: 906698a9ebeee521e9a09df53ac778cb5fc32ca8a03a7bbcd0895708eb8b1309
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic identifying it as a PDF link farm. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=tujhko+jo+paaya+nikhil+d%2527+souza+song', is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, making it difficult to determine a specific user-facing lure. The primary attack pattern observed is the mass distribution of links, likely to manipulate search engine rankings or to lead users to malicious 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.cc/pify?keyword=tujhko+jo+paaya+nikhil+d%2527+souza+song
    • http://files.newsilkstrategies.com/uploads/1/3/1/4/131438708/dedukogagax.pdf
    • http://ravajud.en.inmatesvoices.com/uploads/1/3/2/8/132814930/bopuwudike.pdf
    • http://tatokid.krazines.com/uploads/1/3/1/0/131069992/9c6d6f6beab82dc.pdf
    • http://gokifu.individualnutritionllc.com/uploads/1/3/1/4/131406286/1c065f10af331.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/equivalent_ratio_tables_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/pojapularojimurodowepu.pdf
    • https://cdn.shopify.com/s/files/1/0464/7868/8408/files/free_concert_poster_template_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/practical_english_usage_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/90594535231.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdf
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/fukapixebesek.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/wepok.pdf
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/tofafegudo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4477/2757/files/62473835929.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/3695352143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e56.bin
2162e4aad28688eed14879ec4c02dd36712270917467e6796e228fca542b9525
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E56 5400 bytes
font_01_sfnt_off000060c9.bin
5fd10936184aeec216db039f8f171047657bc844b2b88d2e103b38b91ac7e182
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C9 2360 bytes
font_02_sfnt_off00006b31.bin
f1328ce8b727ca65e3950fb3f8b302c4d3944bb98943619431a7b23c1e791c27
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 9508 bytes