Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbdbea53fbb3595…

MALICIOUS

PDF

41.8 KB Created: 2020-08-02 14:20:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 769f4a13dc68bafce622106e31a59c51 SHA-1: b59720b6fda79d8fb58d34643c0f818b0fe6dd40 SHA-256: adbdbea53fbb359522564f011a1bfe8c930338bed003c82856e0d75025a4611e
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic firings indicate this is a link farm designed to manipulate search results or redirect users. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL is a strong indicator of malicious intent.

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=bootstrap+transparent+button
    • http://files.happykidscambodia.org/uploads/1/3/0/7/130775918/defanixorodof.pdf
    • http://files.drewtcronin.com/uploads/1/3/1/1/131164027/540c873ff35.pdf
    • http://files.maryvillekiwanis.org/uploads/1/3/1/4/131453588/seturagigozofir.pdf
    • http://files.paulsmacs.com/uploads/1/3/0/7/130776185/84bf5620539a5e.pdf
    • http://files.thegreenthumbgardens.com/uploads/1/3/2/7/132740291/jikepafolarakav.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/60094986508.pdf
    • https://cdn.shopify.com/s/files/1/0432/1404/5341/files/55894733323.pdf
    • https://cdn.shopify.com/s/files/1/0437/0379/5865/files/guitar_hero_3_pc.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/61523023568.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/84143398923.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/35507315739.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/puvozaku.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/69697728701.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/yogurtland_gift_card_balance.pdf
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/bopopogemalixuvavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9277/0977/files/formation_excel_macro.pdf
    • https://cdn.shopify.com/s/files/1/0434/9027/9574/files/83331398559.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_off00005a74.bin
927c2c22ade0d32c28d4335dc0289613df95a751fd108a6244b2219ecb241217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A74 4968 bytes
font_01_sfnt_off00006b63.bin
f6d6e08edc4a167a60432a81d11a1e92ab66258b0aa1dbbc26ecb8cb5c03084b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B63 14952 bytes

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