Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecad42957f4c101c…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 23:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8975a976bdf7da317fb833a471276139 SHA-1: 36d7826f8768ecfe07a0e8b586866f54a25acb0e SHA-256: ecad42957f4c101cd42642cc87b3ef99d6cd087c50b1e04c27e33a25ff8ef9d6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. This indicates an attempt to direct users to malicious content, likely for phishing or malware distribution.

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/wix?keyword=fire+emblem+mine+glitch
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/kigususojitofigidavex.pdf
    • https://cdn.shopify.com/s/files/1/0434/7461/6472/files/industrial_wastewater_treatment_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/zetokinuvepemaxudebudax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/xuliditavi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/ropejozotaxavabizimu.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5f3e3d5a9e3433186ffa68aeeea68e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2bacb699132473b95a56e6745e9b6dc.pdf
    • https://static.usrfiles.com/ugd/0049ca_b9df677f40a4457d9afb3c088f8bbe02.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7d85ffc7e1344a5ac97b1d8aeef9855.pdf
    • https://static.usrfiles.com/ugd/98857b_665efb90d2074bb48324577464ac7951.pdf
    • https://static.usrfiles.com/ugd/9ec29b_e05036e00fd340e0b504545da539c1f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ce4937f68704b0c955ed332eef464c6.pdf
    • https://static.usrfiles.com/ugd/a382ee_8f9c0aca83b24f0cb8dffbd5a4e81882.pdf
    • https://static.usrfiles.com/ugd/bfbc46_7790cae0addd418b82ed2fd50f304b67.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_off000065b8.bin
a0a1b6e41412c78f660a3f5ee3d8050bb2bfc60dfe8406a44549efc2e5f48e76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B8 4600 bytes
font_01_sfnt_off0000751e.bin
388daac48c99fbcdbc9dba412be72efcf05896020af0e280998e8e9ec6b27dce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751E 9848 bytes
font_02_sfnt_off000096d4.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96D4 4324 bytes

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