Malicious PDF — malware analysis report

Static analysis result for SHA-256 475aab4b9cff227e…

MALICIOUS

PDF

57.8 KB Created: 2020-07-29 15:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a10a403f132338c68af165eebe576873 SHA-1: 9f3329597bd73d84af6d7031c3c3b2289280ace3 SHA-256: 475aab4b9cff227e741a15370c86449e64505cc302f27d75f618be656bfca5c5
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm or SEO spam campaign. The primary malicious URL identified is ttraff.com, which likely serves as a redirector. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf.

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.com/pify?keyword=dreamweaver+cc+step+by+step+tutorial+pdf
    • http://files.boilingfrogproductions.com/uploads/1/3/0/8/130813732/zesanivegokemut-givod-bobuwovabifa.pdf
    • http://files.cubpack42.com/uploads/1/3/0/8/130813307/lubunasekaruk-dekewid-wuxorolepoj-tigiro.pdf
    • http://files.socohomephotography.net/uploads/1/3/0/7/130774977/filodinurawufa.pdf
    • http://files.aliromanow.com/uploads/1/3/1/4/131452811/3d3c15999d21.pdf
    • http://files.shuckininthed.com/uploads/1/3/1/4/131454012/610126d2cfedbd3.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/65117512412.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/nitefawuwozotevawukoki.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/gofivogato.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bolosenisom.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/babogemumak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7985/0398/files/dodexasu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/87717260363.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4823/files/mevonimevaxixawesukexi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1048/8477/files/lojafesokodojel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/foxivamujigigixajonisufu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8149/7766/files/danuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/47595396856.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/ganiwesebip.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/rokipu.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_off0000a361.bin
8d0d16d68d01e101995ab67eedd8b22d34d1dcb9c51f520b867712340aee7b58
pdf-font-stream PDF embedded font (sfnt) at offset 0xA361 5468 bytes
font_01_sfnt_off0000b612.bin
49fcb6901e25edaeb5e8c619b34e9b047642c55bf2d14767995f5b0802ba20cd
pdf-font-stream PDF embedded font (sfnt) at offset 0xB612 10244 bytes