Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5d3a0a711ff3c9…

MALICIOUS

PDF

46.1 KB Created: 2020-08-13 21:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fce96eca5ee73c7ce5017c51024aa65 SHA-1: e1363428fc8542bd092b846cb318a701266c0dac SHA-256: 1b5d3a0a711ff3c9f0b13257cf3e02309f59989f731686d90816bcbfc20e1d44
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=best+birthday+background+music'. Another critical heuristic indicates a PDF link farm, with the primary link pointing to 'https://cdn.shopify.com/s/files/1/0431/6246/8514/files/mupevumamovuxujelofirazoj.pdf'. The document body is heavily obfuscated but contains these URLs, suggesting a lure to external 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.ru/pify?keyword=best+birthday+background+music
    • http://files.trailbaseball.com/uploads/1/3/1/3/131384113/9803072.pdf
    • http://files.myfachurch.org/uploads/1/3/1/3/131398279/e21281d59c1.pdf
    • http://files.davidjsimpsonart.com/uploads/1/3/0/7/130776819/mumoxineruf_josite.pdf
    • http://files.flagstaffsnewhomesforsale.com/uploads/1/3/1/1/131163683/dakagupanam.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/mupevumamovuxujelofirazoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/85701142667.pdf
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/28708664640.pdf
    • https://cdn.shopify.com/s/files/1/0438/8595/3192/files/bozodexefivenigu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3220/7782/files/essentials_of_risk_management_in_finance.pdf
    • https://cdn.shopify.com/s/files/1/0438/1304/4386/files/amadeus_commands.pdf
    • https://cdn.shopify.com/s/files/1/0431/0443/6390/files/31373293654.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/14140760891.pdf
    • https://cdn.shopify.com/s/files/1/0454/6861/4808/files/blender_text_animation_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/2951/8741/files/22778136629.pdf
    • https://cdn.shopify.com/s/files/1/0444/3173/6998/files/cgeit_exam_sample_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/holistic_thinking.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/9549176649.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_off000071e7.bin
f1335d9be695e7af792600530a4b26e9f92718d0b7033f9eaaa2e4e1e6935652
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E7 5676 bytes
font_01_sfnt_off0000850e.bin
0ce9845c1441cae5942f1456cca09901931f6e913b9d1f503ee2da173f544f43
pdf-font-stream PDF embedded font (sfnt) at offset 0x850E 10900 bytes