Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8e4f2f8e1a280a…

MALICIOUS

PDF

50.1 KB Created: 2020-08-20 23:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 727efb4cac43f6b517daef2a557fd49e SHA-1: 30a7e553e1996e5885b7102f5ccc6d0e486fbd9e SHA-256: 1a8e4f2f8e1a280a83a85a390e0e1cb1726ff8c93419f32ff06de2ed40681c59
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is associated with malicious activity. The document body also contains a call-to-action phrase and the embedded URL, suggesting a lure to download a file. The presence of a large number of external PDF links further indicates a link farm, often used for SEO poisoning or to obscure malicious destinations.

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.ru/pify?keyword=trustedinstaller.+exe+windows+7+x64
    • http://files.genprice.shop/uploads/1/3/1/4/131453226/723370.pdf
    • http://files.columbuschristianacademy.com/uploads/1/3/0/8/130874126/19d18f52.pdf
    • http://files.blairmielnikdesign.com/uploads/1/3/0/7/130739247/5e02b27.pdf
    • http://files.davidgarza.com/uploads/1/3/0/7/130776374/b939f2d.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/ielts_academic_writing_practice_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/encyclopedia_of_candlestick_charts.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/55130007931.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/9607044222.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3050/files/95946720140.pdf
    • https://cdn.shopify.com/s/files/1/0437/2758/5430/files/enzima_aspartato_aminotransferasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/maths_syllabus_d_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/84734847165.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8328/2070/files/marriage_biodata_format_hd.pdf
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/among_us_apk_mod_2019._8_9.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_off00006d2b.bin
449d1434ee506ce242052cfa0002062dc7af3afca1f039dc95e5e0737dfc6f5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2B 5280 bytes
font_01_sfnt_off00007f52.bin
2ce261965c5b1f46d6e44951acb95c516c10e927f65394ad64a783c7fcad2180
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F52 11096 bytes
font_02_sfnt_off0000a4de.bin
060a7d97e72893e0ea86a8f4d57c813c93f89f7f5f965b91fc9f2dfacac99ac6
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DE 16484 bytes