Malicious PDF — malware analysis report

Static analysis result for SHA-256 e175cfe2d0d240d6…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 14:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bec9ba308ebbf6ca004408a1a11de654 SHA-1: e545748b62fc04a37df3b43aed662208106e2712 SHA-256: e175cfe2d0d240d6275ef993ccfa4f255c6560d3174679aa5cf4deeb945c69f1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=ishq+chunariya+full+video+song`. This URL is presented within the document body, disguised as a video song title, likely to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to `https://cdn.shopify.com/s/files/1/0430/9362/2935/files/spotify_free_apk_file.pdf`. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=ishq+chunariya+full+video+song
    • http://files.catherinegrace.co/uploads/1/3/2/6/132695747/vawuto.pdf
    • http://files.craigformissouri.com/uploads/1/3/1/6/131637131/zubag.pdf
    • http://tazasaxo.shsbusinessclass.com/uploads/1/3/1/4/131437987/nimifenov.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/spotify_free_apk_file.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/50526812818.pdf
    • https://cdn.shopify.com/s/files/1/0432/5205/6227/files/luvevesod.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3863/files/42113580145.pdf
    • https://cdn.shopify.com/s/files/1/0433/8889/5386/files/wujezatabekobaledomo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/voxujobak.pdf
    • https://cdn.shopify.com/s/files/1/0432/6080/5280/files/jizovemerizim.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/xenirujalarudanudal.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/mi_box_android_tv_best_buy.pdf
    • https://cdn.shopify.com/s/files/1/0437/5435/6897/files/60271177263.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dbb.bin
ac8cf8a10cb8d825484e6eb82469eac1e734ba337bc8feb0939fc3352ef6337c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DBB 5508 bytes
font_01_sfnt_off0000606f.bin
3de073f564912be27da3ff1decbaeee9facf600c453057690a6b3dfe45a9ef17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 14508 bytes
font_02_sfnt_off00008da5.bin
51a5daa3fd94eac2fe69a78c26c3ff11e2e6d85eda23921827159eda38ba0cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA5 3540 bytes

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