Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9d21904e25da7b…

MALICIOUS

PDF

45.8 KB Created: 2020-08-22 19:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e00811193b725d872e1e41426a777ad SHA-1: b36118635d708d1c43ed3321bdf2eee6d7febc48 SHA-256: ce9d21904e25da7b7a1875c03af16b99a9cd3c045f9b5909b881cba5491b19e7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=cardboard+pinhole+camera+template', is designed to redirect users to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the true malicious destination. The primary malicious IOC is the redirector URL.

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=cardboard+pinhole+camera+template
    • http://poxumopo.bridgescounselingservices.com/uploads/1/3/1/4/131455158/fefedopa-jupazamafan-lunopuv-xolos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4790/3644/files/country_calling_codes_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/erosion_and_deposition_by_glaciers_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/4591/2727/files/delhi_mts_admit_card_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/bacteriuria_asintomatica_en_embarazadas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4285/files/tunijunina.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/tasiduledikesumirobegim.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/kiran_bank_po_english_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/setarujizaxemifumibatonek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075d9.bin
bff797605d15eb90432b0ab82e31027e7d166a01e7546505f9cf8ddf36deff3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D9 5180 bytes
font_01_sfnt_off00008743.bin
ad1b01594ba4449c9bfe7fd671bd288271f32b603112b4accb5da501447d8b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8743 10360 bytes

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