Malicious PDF — malware analysis report

Static analysis result for SHA-256 999e43f5d894d815…

MALICIOUS

PDF

39.7 KB Created: 2020-08-14 11:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e951fd058ab9e679286c7a07dcfaed SHA-1: 3b5ba37742ddeaba870554f2c868f6462d02b003 SHA-256: 999e43f5d894d815616f0e6ab6e6778ec957a5b8250fd194d60a6153f0f1420d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, such as ttraff.com. The document body, though partially corrupted, contains a reference to "Battery saver song" and a URL that aligns with the malicious redirector heuristic. The primary attack pattern involves luring users to potentially malicious external sites through these embedded 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.com/pify?keyword=battery+saver+song
    • http://files.filipemiguelart.com/uploads/1/3/0/9/130969305/8b38246184.pdf
    • http://zevad.noon2moon.com/uploads/1/3/0/7/130740141/famafazizodalu.pdf
    • http://xatep.improvedenglish.com/uploads/1/3/1/6/131606149/7d322625f.pdf
    • http://files.wilsonfarmmurfreesboro.com/uploads/1/3/0/7/130739704/zedek.pdf
    • http://files.phonekeysystems.es/uploads/1/3/1/4/131453684/koxanoroxez_sibeka.pdf
    • https://cdn.shopify.com/s/files/1/0441/1647/6056/files/kipalebapoponuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/multi_camera_calibration_github.pdf
    • https://cdn.shopify.com/s/files/1/0431/0758/2106/files/97401578766.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/xamosejapas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/cenas_saludables_para_bajar_de_peso.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/74171726808.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/11258597296.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/acetato_de_sodio_usos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/97400998401.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/teaching_pronunciation_esl.pdf
    • https://cdn.shopify.com/s/files/1/0436/3150/9664/files/66450123280.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7639/files/guxov.pdf
    • https://cdn.shopify.com/s/files/1/0446/9476/5724/files/8683001568.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/mijotemopenavofisojediv.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_off00005d6b.bin
2363e14361e0dc7cb47145b59994d2d3f4437df8687815944c1f2fbbffd009c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6B 5032 bytes
font_01_sfnt_off00006eae.bin
3c3a20e248b653aeb3d9c7894da84c8974f2083f840d5d3d6cf9cc56bab5a15c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 10232 bytes