Malicious PDF — malware analysis report

Static analysis result for SHA-256 c354853827167713…

MALICIOUS

PDF

39.5 KB Created: 2020-07-22 20:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d14e8076b9b33fe3c528778a30d638d SHA-1: b3a1374e25fb813f045d92ea4683f019ac9b151b SHA-256: c354853827167713f32666809158955d3f95d6482ce97febda4f908b9ed0e5b8
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam or phishing. One critical heuristic identifies a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=exercise%20verb%20to%20be%20present%20pdf'. Another heuristic flags the document as a PDF link farm, indicating a large number of external links, many hosted on cdn.shopify.com. The presence of a 'download button' lure further supports a malicious intent to redirect the user.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=exercise%20verb%20to%20be%20present%20pdf
    • http://files.robpedley.co.uk/uploads/1/3/1/3/131398582/mumajewufibupazotok.pdf
    • http://files.chicagoschoolofgrappling.com/uploads/1/3/1/4/131409170/312064.pdf
    • http://files.talgolani.com/uploads/1/3/2/7/132740296/tefimuxoponu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/20824618214.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/72852875015.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0875/files/64216005850.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/jutuladuda.pdf
    • https://forenuxi.files.wordpress.com/2020/06/38404555602.pdf
    • https://wowewuso.files.wordpress.com/2020/06/51459539230.pdf
    • https://pagapulikuv.files.wordpress.com/2020/06/5804613773.pdf
    • https://xumufikok.files.wordpress.com/2020/07/sajisunimobajenimag.pdf
    • https://ratekoxon.files.wordpress.com/2020/07/36256552613.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/rigetunikijoretoguvilezol.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/delojopelamekonigesi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wuvinotagug.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/figotezonegimevopixija.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/3438362723.pdf
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/zunasowenozoxujeloz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1485/5583/files/lofunav.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/5363311615.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/kuwukarolawudam.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/kawedijemojelepukus.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_off00005e58.bin
b90b1337fafb0f2c11a2a7cd8cd687d92ed9309af3d2248177e980bebcd3d287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E58 4920 bytes
font_01_sfnt_off00006f1d.bin
21dd7a5584495fbaa80989f3d0c461997b5421351f705b050222b34dffb72d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1D 9672 bytes

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