Malicious PDF — malware analysis report

Static analysis result for SHA-256 c396efccd14ca704…

MALICIOUS

PDF

44.7 KB Created: 2020-09-09 17:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 484c66db45fa52188959542a73df7677 SHA-1: c29519a86ed5298e6138b96dc653dfa7af4074ab SHA-256: c396efccd14ca704ae944f0a92cb018d15561be1d807df91fb28a2f59b75aad0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates the presence of a PDF link farm, designed to manipulate search engine results or redirect users to malicious content. The primary redirector URL, https://ttraff.club/wix?keyword=aisi+desi+na+bola+kar+song, is flagged as malicious. The document body itself is largely unreadable binary data, but it does contain the song title and the malicious URL, suggesting a lure to disguise the malicious intent.

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.club/wix?keyword=aisi+desi+na+bola+kar+song
    • http://files.icerandw.com/uploads/1/3/2/6/132681482/biwusote-fatanewakuvase-kifexaz.pdf
    • http://files.downtownfirst.org/uploads/1/3/0/7/130740385/pesovujudagox-medekeruzek.pdf
    • http://febepe.psucusa.com/uploads/1/3/1/1/131163599/jumizavobire-zutuwerenexowa-jitosowajag-nusebawo.pdf
    • http://files.lifespacedesigns.com/uploads/1/3/1/3/131398113/dufis.pdf
    • http://files.kristenwu.com/uploads/1/3/1/3/131380728/balinaropatinoj-sakito-xewigajikovixer.pdf
    • https://static.usrfiles.com/ugd/cc03df_a4af2372fd3a4ad89d70c89c4c98b036.pdf
    • https://static.usrfiles.com/ugd/143c98_d7cf7a843a5844bfb12753760c79c6b0.pdf
    • https://static.usrfiles.com/ugd/63d3ad_bb86ae041a6c43f887de69754a512d89.pdf
    • https://static.usrfiles.com/ugd/b8c837_baa8a104365144aca3b6f00fa7886710.pdf
    • https://cdn.shopify.com/s/files/1/0432/2715/2539/files/pinnacle_studio_12_ultimate_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/2729/0518/files/telugu_news_live_app.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/bofawigexizevoveza.pdf
    • https://cdn.shopify.com/s/files/1/0451/7163/8421/files/camping_strasko_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/4374/9029/files/73580882823.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_off0000637c.bin
e0a84a8baf9806b8c053d285bbcd711742b840b961851dda9e6d2bbf1bd197e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637C 5188 bytes
font_01_sfnt_off0000752e.bin
b6ad35f5b5f387c2d795bb839dd48854cd2e4f641caa2b6de00e2bd37e7346e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 15140 bytes

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