Malicious PDF — malware analysis report

Static analysis result for SHA-256 54894978383fa7b3…

MALICIOUS

PDF

51.3 KB Created: 2020-08-10 07:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ed26f2fd03fe9c12257f66ed83ea8b9 SHA-1: 682dc26a3607576c8415f184ab79131076a26c0c SHA-256: 54894978383fa7b36baeac51017027d03bbfd3bc69fe4b764581ad4324421a4f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=adobe+illustrator+pdf+size'. The document body, though heavily obfuscated, also contains this URL and references to 'Adobe illustrator pdf size', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm designed to obscure the malicious redirector.

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=adobe+illustrator+pdf+size
    • http://files.floridalivesound.com/uploads/1/3/1/4/131452799/60457dcb62.pdf
    • http://files.entsocont.ca/uploads/1/3/0/9/130969153/7350385.pdf
    • http://giben.preferred-personnel.com/uploads/1/3/0/7/130738970/7242474.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/tututoxajilijiwo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8415/9903/files/hysteria_bass_tab.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/80809169654.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/relawaferevakifadoresepa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/90820267541.pdf
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/kopopuzuxaguvokufokugoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0418/9096/files/rusilixovodejura.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/twinkling_titanite_ds2.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/zorugusuvexetumasinudawo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4569/0266/files/mijejojamujuniz.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/bepuwefozejubemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/amphoteric_oxides_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/10289241541.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e5.bin
44284d24ae60477bd17d98553086845383e5b263856ef17317078b5659c45138		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 3872 bytes
font_01_sfnt_off000073b1.bin
746efc974492e64260051fd5dc31450e6e1e69ab4c47d7d43fb0c28e017a082d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B1 5212 bytes
font_02_sfnt_off0000857c.bin
2e1662c4adc245284c83763495f8929087b9be10b9cf2f7dca6ad31ca1074e1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 10304 bytes
font_03_sfnt_off0000a8ba.bin
5e7ad08309b2ee93d17f315eadbc5684c7aeaeb368481fd36c4e9842e7c12f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8BA 16564 bytes

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