Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d67a7301e90fe8…

MALICIOUS

PDF

60.8 KB Created: 2020-08-10 19:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea20a56f19d1101a3d6b16814ac3648 SHA-1: 92ff6487eeacebfca0a135356ad7a7567c3d271c SHA-256: a6d67a7301e90fe85d638e145e5017e2fd3d79728b9c1225585a766169ad4c0e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggers this heuristic. No scripts were extracted from this sample.

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.com/pify?keyword=ganesh+atharvashirsha+pdf+english
    • http://files.theperpetualmaker.com/uploads/1/3/1/8/131857152/lifarifufa_libaweni_mutuwita_litam.pdf
    • http://files.peakhealthcaremaryland.com/uploads/1/3/1/4/131406816/rizapisopasiraluzoga.pdf
    • http://files.villaparguerahotel.com/uploads/1/3/1/8/131856498/jizuvanezi_moxeziki_konamadixufaj.pdf
    • http://files.sportscove.com/uploads/1/3/0/7/130738620/d54d0ede7c5a79.pdf
    • http://files.pondviewmanor.net/uploads/1/3/1/4/131407088/bowezapivopudatute.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/84490423747.pdf
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/characteristics_of_a_social_entrepreneur.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/sirim.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/addition_and_subtraction_worksheets_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/basics_of_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/jemuxoravifunuporupisifuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/67096250978.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/mijomux.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/32087138113.pdf
    • https://cdn.shopify.com/s/files/1/0438/2071/2098/files/66203748786.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/769680088.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082f3.bin
6da275c94622f3e9c13e6c7e5fb425eabc6fe63452e5f1211455df29939d427d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F3 5396 bytes
font_01_sfnt_off0000954f.bin
4cd60777e265fafd80a6c4ac8a8f541642313e2b1c6670a3899fdf55b12f51bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x954F 3772 bytes
font_02_sfnt_off0000a0f4.bin
59d64580943df75ab8c0207725a654d4b3e06c828334f021efdf97cd5e19d174		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F4 10236 bytes
font_03_sfnt_off0000c392.bin
655e7152c9cc245088acf3ea1de7133874e1d3371199fff74e93115acb0b5335		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC392 10724 bytes

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