Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b9177bf040fc52a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 01:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b01db005737d3552ef9e7facbcadf162 SHA-1: 2bf7c9fea11967fa53c729ba9ab5c40c314c96ba SHA-256: 8b9177bf040fc52ae6df5fc921ac9a23a1c9bd3dda26f3928b5ca0fe58b147f2
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=anonytun+mod+unlimited+pro'. This suggests a phishing or social engineering attack aiming to trick the user into downloading potentially malicious content. The presence of a 'download button' heuristic further supports this. No scripts were extracted from this sample.

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/pify?keyword=anonytun+mod+unlimited+pro
    • http://files.diedhardlaughing.com/uploads/1/3/2/6/132696465/lozofozutezig_bukewoj_futojivodu.pdf
    • http://niwude.scarletthawkins.com/uploads/1/3/0/8/130873995/7950764.pdf
    • http://files.musicforminors2.org/uploads/1/3/1/4/131452872/wufuforu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/zalupatugodapijasewof.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/vapederuwejawux.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/bpsk_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/tivuganapobazawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8557/files/talizubilofem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muxolalinurijelibabozafod.pdf
    • https://cdn.shopify.com/s/files/1/0437/5881/3341/files/assertiveness_training.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/3201136728.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/nizazedige.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/30703974286.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/63395693669.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_off00006a89.bin
4d81e22d2bacca000269cc4990eb8499202ecb3b2ee8b5359784857090200d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A89 4808 bytes
font_01_sfnt_off00007ad0.bin
61cc69cc49cbc3eb47b12af1fc3d4249edd4d69f5d5a3037672bde414f641c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD0 10220 bytes

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