Malicious PDF — malware analysis report

Static analysis result for SHA-256 21cce53ee0a120a6…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 02:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4f4a42f049967f541db3a7ddef301f1 SHA-1: dddc709f2a7bb9d8d97f50c4b60d1dff7d11a2ca SHA-256: 21cce53ee0a120a695cfb0795e44543fa4d7281c16c8939fa0566d3587668291
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body and embedded links suggest a lure for downloading content, which ultimately leads to the malicious URL https://ttraff.com/pify?keyword=classroom+of+the+elite+light+novel+english+pdf+download. The presence of a visible LOLBin command execution instruction further supports malicious intent, likely for downloading and executing a secondary payload.

Heuristics 5

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=classroom+of+the+elite+light+novel+english+pdf+download
    • http://files.thearamaicscriptures.com/uploads/1/3/0/8/130813781/8997320.pdf
    • http://davonesa.enlightenfredericton.com/uploads/1/3/1/4/131482995/loniloku.pdf
    • http://teroben.smesorchestra.org/uploads/1/3/1/3/131383775/8033889.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/25012128044.pdf
    • https://cdn.shopify.com/s/files/1/0436/8593/7307/files/56350915655.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4103/files/sajopixivalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/twinkle_twinkle_little_star_piano_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/jesanetinesewi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3617/2710/files/zopefiwujoxene.pdf
    • https://cdn.shopify.com/s/files/1/0436/7751/5929/files/xalokok.pdf
    • https://cdn.shopify.com/s/files/1/0433/6726/8517/files/pekirojosefedereza.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/malapewimijanu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/penelope_bagieu_josephine.pdf
    • https://cdn.shopify.com/s/files/1/0433/7169/2188/files/just_one_look_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/lanegakoduzuzobifipifovu.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_off0000559a.bin
25a463df27873235323891d6482b4052ae5460c86b33b1e4a49caae6b8daefed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559A 5692 bytes
font_01_sfnt_off0000696f.bin
c7399cd12111505f2b256a778fd35386acf95166c4d3a0ad6000d465cb305c22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696F 5512 bytes
font_02_sfnt_off00007c17.bin
b838dbaa28c3d81d7b09315bc80c1361056a2d02c2843dfd0a1c931abc3d59bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C17 10576 bytes

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