Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda79d6466d2f63b…

MALICIOUS

PDF

40.0 KB Created: 2020-08-25 03:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49bf5722ec23464573dedea4aa36940d SHA-1: c3c066134c59dfac3a5274ec6d6f1118d3347fee SHA-256: fda79d6466d2f63bea69eabadc6d31837cfe247b93d2483e3e224decd6f7f541
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.cc/pify?keyword=computer+architecture+mcqs+with+answers+pdf', is designed to lure users into clicking by appearing as educational material. The PDF structure and link farm indicate a social engineering tactic to drive traffic to malicious sites.

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=computer+architecture+mcqs+with+answers+pdf
    • http://files.classicalmusicphotography.com/uploads/1/3/1/4/131483009/4206221.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/concept_review_carbohydrates_and_lipids_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/8388845807.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0576/files/convert_mp4_to_mkv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/25134444309.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/capteur_de_temprature_automobile.pdf
    • https://cdn.shopify.com/s/files/1/0441/1555/8552/files/cantaloupe_island_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/9293/2763/files/nj_driver_s_permit_test_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/12614331446.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/www_amazon_getandroidvideo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/kpmg_vietnam_tax_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/0052/9049/files/30957058808.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/sedoxuv.pdf
    • http://www.cs-mcqs.blogspot.com
    • 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_off00005e60.bin
0ed3475d6e4b3aea49d6d2704cd144cbd347483b10c4c8ec1c8e3dab9d166e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E60 5488 bytes
font_01_sfnt_off000070ee.bin
4dbf3d89a3c9bc6fc390dd6a41d41a0d267d1d7370d408ae86d317d20c93766d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70EE 10132 bytes

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