Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc14276552bad7a…

MALICIOUS

PDF

60.8 KB Created: 2020-08-10 22:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b0744e4386fac62ab30c44f15767902 SHA-1: 3b5c67749d8db2034565bdf7f4b5a6b2a4310159 SHA-256: 3cc14276552bad7a0b2bc404c868e2170b1a52e0b54dab325b96c41c2e67e81b
120 Risk Score

Malware Insights

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

The PDF contains numerous links, identified as a link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=advanced+excel+formula+book+pdf', suggesting a lure to download a seemingly legitimate document that instead redirects to malicious infrastructure. 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.ru/pify?keyword=advanced+excel+formula+book+pdf
    • http://files.breezyshoresmininubians.com/uploads/1/3/0/7/130776682/619267.pdf
    • http://lomum.mygrid.org/uploads/1/3/1/4/131453870/6508996.pdf
    • http://files.brasserielouloudi.com/uploads/1/3/1/4/131437474/2096263.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/portuguese_to_english_phrases.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0335/files/tarepuzoxobexomis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2679/2100/files/53059670409.pdf
    • https://cdn.shopify.com/s/files/1/0438/0491/7917/files/xbox_one_ipv6.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0437/9177/7949/files/zofapipojok.pdf
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/63819583216.pdf
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/lavokeguvegikavalur.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/30996924592.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/72532157526.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/volkswagen_jetta_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/51950378567.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007481.bin
792e288023e4fbe73a0351c4e4cf94c19217598e688914c0413f09f13c1160d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7481 6568 bytes
font_01_sfnt_off000084ce.bin
2b45d9b27ed821d8e27a6d32755de5278169ea16b3e9ec1030fa15fe28765539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 5444 bytes
font_02_sfnt_off0000973b.bin
065f2abfb6bf82b1afde6bfb4cfa224dfadc3c5d80a67096a22c7f2da70928c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x973B 2132 bytes
font_03_sfnt_off0000a138.bin
f1317bacb6a74cc611afd763f9d4b78cff23cc65ab5434ec39cddec1bcd71ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA138 14660 bytes
font_04_sfnt_off0000cf7b.bin
01934bae5a76374c558b256b5a999434f84d06e0733bd05e430fdbd575094919		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7B 16236 bytes

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