Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da937878c18c36c…

MALICIOUS

PDF

51.6 KB Created: 2020-07-10 04:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84e4969026047326f2a5b52b58099aa9 SHA-1: dcd665b92e33240ae698f05a93d2c61343932421 SHA-256: 1da937878c18c36c887fbaf661bd36152db554b1df54f3a8726b09580268fcbf
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One of the primary links directs to a known malicious redirector, suggesting an attempt to lead the user to a compromised or malicious site. The document body, though partially garbled, includes the same malicious URL, reinforcing the intent to redirect the user. No scripts were extracted from this sample.

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/wb?keyword=convert%20pdf%20music%20sheet%20to%20midi
    • http://files.hggiftshop.com/uploads/1/3/2/6/132681757/32bef38b5.pdf
    • http://files.bbsimon.com/uploads/1/3/2/6/132682570/tudijimavu.pdf
    • http://files.mskotcherapah.com/uploads/1/3/1/3/131380482/3313817.pdf
    • http://files.sidleystandup.com/uploads/1/3/0/7/130775942/3089407.pdf
    • http://files.shoresidedentures.com/uploads/1/3/0/8/130873771/5344137.pdf
    • http://files.weinerelementary.org/uploads/1/3/1/4/131437107/nazoxasetozi.pdf
    • http://files.oace.co/uploads/1/3/1/3/131381781/parotakime.pdf
    • http://files.clumsycourierwine.com/uploads/1/3/2/7/132740239/fokifovad-dajemoned-juvevifufuwogo-xojevuxudu.pdf
    • http://files.shaneproductions.com/uploads/1/3/2/6/132681391/gidabewarazu.pdf
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdf
    • https://lumozipezu858735
    • https://pakelito68704891.files.wordpress.com/2020/06/87995988113.pdf
    • https://fakemoj.files.wordpress.com/2020/06/tokapituxumovixuvogi.pdf
    • https://lumozipezu858735365.files.wordpress.com/2020/07/xapolanizotisodasukudu.pdf
    • https://dijilavuxiji.files.wordpress.com/2020/06/28113795292.pdf
    • https://zinisarov424395058.files.wordpress.com/2020/06/32409141228.pdf
    • https://xegetiku.files.wordpress.com/2020/07/72154404864.pdf
    • https://sunesidovop.files.wordpress.com/2020/07/zuxuvixogabawalijafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lobusine.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/savowogofoxifonikili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.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_off00008c0b.bin
a70a85cc3860fb751bc4638c2efb056e1afbcf3d05f57f938467ac7eb58be0c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0B 5120 bytes
font_01_sfnt_off00009d56.bin
f7ff9c7abc7f9168df803f8010cad7f4f50416c3f8566618509b4d6e59b743e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D56 10280 bytes

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