Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccbf4ba477bbe1a2…

MALICIOUS

PDF

45.7 KB Created: 2020-08-19 10:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06c0d02f3ac7093a31b480da2a4be566 SHA-1: efa6886dcbb5f2719c47ee688d73c03fba4c03e9 SHA-256: ccbf4ba477bbe1a2da546add6f5db46cf486d5f4ee9934583de7ce89b30d90f8
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, indicating a link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=the+boondocks+intro+song'. The document body contains obfuscated text and embedded URLs, further supporting the attack pattern of redirecting users to potentially harmful content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=the+boondocks+intro+song
    • http://files.aasstcjr.com/uploads/1/3/1/4/131482819/7536844.pdf
    • http://zaxigapo.carvedstones.scot/uploads/1/3/0/8/130874493/bijal.pdf
    • http://files.bardicform.com/uploads/1/3/1/3/131380485/6585589.pdf
    • http://files.journeywithjennifer.com/uploads/1/3/1/4/131437657/zemixiko.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/aspectos_biologicos_de_la_adolescencia.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/xinibumigovalagebesig.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/96603141594.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/pufanun.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/les_accents_cm1.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/wimivuri.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/cement_plant_working_process.pdf
    • https://cdn.shopify.com/s/files/1/0432/1162/0509/files/78023632196.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/balevogigadan.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7261/files/akai_mpc_touch_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/8940757415.pdf
    • https://cdn.shopify.com/s/files/1/0436/6581/7753/files/93328146899.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_off0000698f.bin
f56db3633d448cbfd21cd0cb18a6e0d2663a5d43a232b697c3b11a61bb7f572e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698F 5112 bytes
font_01_sfnt_off00007ae1.bin
62e47767d538f890bb4d14a8543be5ff56d49b104cd7e081e0958e473054e8a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE1 14392 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.