Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5591457685fdd7a…

MALICIOUS

PDF

36.7 KB Created: 2020-07-09 06:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d5574f0776073834e4c9b10af3b138 SHA-1: fb0a403fb4ad584498e96a4c0f86407acdb390c0 SHA-256: e5591457685fdd7a48fdb49271d92b1685bb3a0fd0955a3a2caa6c3787e1951c
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, indicating a link farm or redirection attempt. The presence of a 'Download Now' lure further supports a malicious intent to trick the user into clicking through to potentially harmful content. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or malware delivery attempt.

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.com/wb?keyword=yojana%20magazine%20april%202019%20pdf%20download
    • http://files.vallenduuk.pl/uploads/1/3/1/8/131872048/munaxatop.pdf
    • http://files.phonekeysystems.es/uploads/1/3/0/9/130970014/zigadozebilapabip.pdf
    • http://files.linhr.com/uploads/1/3/1/0/131070189/tabotusatoboza.pdf
    • http://files.cookedwithhart.com/uploads/1/3/1/4/131409884/31d56c5a0280.pdf
    • http://files.dewynns.com/uploads/1/3/2/6/132682565/wibatidekox-vadibafazoro-wepoxoxigojuz.pdf
    • http://files.edmerrison.com/uploads/1/3/1/4/131408546/8293145.pdf
    • http://files.zamdevelopsj.org/uploads/1/3/1/1/131164534/7449164.pdf
    • http://files.westcoastmuddypawz.com/uploads/1/3/1/3/131381722/4393034.pdf
    • http://files.local811houston.org/uploads/1/3/0/7/130775123/64bb88e30a2c846.pdf
    • https://tisamipaf.files.wordpress.com/2020/06/wexikugemo.pdf
    • https://wiginikinu.files.wordpress.com/2020/06/6846595190.pdf
    • https://fuwedibet.files.wordpress.com/2020/06/bugowodupi.pdf
    • https://jusapowu511414761.files.wordpress.com/2020/07/fegidigejoda.pdf
    • https://zapofebozapu.files.wordpress.com/2020/06/wakelo.pdf
    • https://pilimiridap.files.wordpress.com/2020/06/80512857348.pdf
    • https://minuboge.files.wordpress.com/2020/07/70518607511.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.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_off00005125.bin
94c4a86fbdcfc5029a4b574d6cb8bd1f72b24ab10abbe3838428ff74f3c447e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5125 5552 bytes
font_01_sfnt_off00006407.bin
c4b045d07ef55dab4b9c106aab541d669ff8aefc2c20c1867a14f4f8dccb8bad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 9776 bytes