Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54402dd55d3cfd5…

MALICIOUS

PDF

59.9 KB Created: 2020-07-30 17:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8be056262b23cc03951c8320b74db14b SHA-1: d6c3c35b3c0265306509a3f57053b1f9d4ea43fe SHA-256: a54402dd55d3cfd5b3014d4cafb379b445e9c982d9fa4053200b658bf224a603
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is ttraff.cc, which is known for malicious activity. The document body, though heavily obfuscated, appears to be a lure related to 'Japanese conjunctions list pdf'. 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.cc/pify?keyword=japanese+conjunctions+list+pdf
    • http://files.kcbevco.com/uploads/1/3/2/6/132680901/tukuwukos.pdf
    • http://files.altruswap.com.au/uploads/1/3/2/7/132710700/sapeponafe.pdf
    • http://files.latorreholidays.com/uploads/1/3/0/8/130813646/livitudo.pdf
    • http://files.oicphotography.com/uploads/1/3/1/6/131636644/112142a3b4.pdf
    • https://cdn.shopify.com/s/files/1/0430/0315/0499/files/18580262749.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/18198457690.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/55974127181.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/gawebow.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/96526442388.pdf
    • https://cdn.shopify.com/s/files/1/0435/3005/9927/files/77242441831.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/44047312178.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vepotarinaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/48929831369.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/1981188893.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/xarurovunukadedidufebase.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/gulotipivopasebatozoda.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_off00007a24.bin
29e3c47c46a7120692354ad8b31825df7e02268f3cc6bd2be47c57aa6aaae3b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 12580 bytes
font_01_sfnt_off0000a2b1.bin
b7a81af0bad42cced1979acb3dd0957ebf8464d40cf042c1c45d3318cd5fff23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B1 5000 bytes
font_02_sfnt_off0000b3c0.bin
3419bf5db42bb1685bf421d3b6741a7f8103d49ecb641ad315efe895d39d396a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C0 14972 bytes

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