Malicious PDF — malware analysis report

Static analysis result for SHA-256 4123f3032ea69da1…

MALICIOUS

PDF

58.5 KB Created: 2020-08-06 13:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b4c4d62c3843c32d7e3e0a7ce196b06 SHA-1: 258c7eb8214f1cab38088d80e42b03eb03c9d9f7 SHA-256: 4123f3032ea69da19038ea8339af1e0a40de5975407cb9de2f2168f140037dbc
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'baby names' and the malicious URL, suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm technique to obscure the true malicious destination.

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=baby+names+boy+tamil+pdf
    • http://files.kresscinema.com/uploads/1/3/0/8/130874058/wonep.pdf
    • http://files.anewagingmovement.com/uploads/1/3/0/9/130968994/tixozijewu_palezuwane_zowat.pdf
    • http://files.annaclairecalligraphy.com/uploads/1/3/0/7/130775658/0f5bd4bebd0ce49.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8022/files/dibarigume.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/saluwiwekubowumidavanob.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/zuwejajonojebujovedo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/67460698969.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/23795277601.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/busagis.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8574/files/34053968571.pdf
    • https://cdn.shopify.com/s/files/1/0434/3896/4903/files/10520856836.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1766/files/xibutavirena.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
stream_004_off00007e6f.bin
58248d4b27c598b9669c31b1ab8f8b2f4d56561482e1faaf808d74a605856d6c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7E6F 21816 bytes
font_00_sfnt_off00006c31.bin
d1c0554521266dfccd24aed7527ce93bd4cdc02afd03ddf9beb95d8f5d62a578		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C31 5380 bytes
font_02_sfnt_off0000adc2.bin
7d69e8d3fd0d0465d17fed320f5e854819e984bf47b8e6718364924c4c1c22ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC2 15464 bytes

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