Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2fe40f487aca54…

MALICIOUS

PDF

39.9 KB Created: 2020-08-17 00:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41b24fdcae0337a0d79202d61e409f39 SHA-1: 0bced94532634e4872c3e0db62c504fd5277060f SHA-256: 9c2fe40f487aca54852163490b5d190b8b8234b37336a284a2599eef505b81fa
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=numbers+1-+30+in+spanish+worksheet'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or content distribution network used to obscure the ultimate destination. The primary intent appears to be redirecting the user to malicious infrastructure.

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=numbers+1-+30+in+spanish+worksheet
    • http://vunuram.ollywilliamsracing.co.uk/uploads/1/3/1/6/131606490/kimokuzusodagimor.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/7175417859.pdf
    • https://cdn.shopify.com/s/files/1/0437/6159/8616/files/sadikemobedaxurovejiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/kixiza.pdf
    • https://cdn.shopify.com/s/files/1/0440/9176/8984/files/hid-_compliant_mouse.pdf
    • https://cdn.shopify.com/s/files/1/0434/4912/2972/files/oscar_peterson_little_jazz_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/88352961121.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/brainpop_login.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/great_god_of_wonders_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/7461432673.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/anaconda_python_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8219/4852/files/55405661124.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_off00005cfe.bin
685c2fe6c10411d51357e21dd24fab6b840579c203988bf8d4391490c0d6f98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFE 5680 bytes
font_01_sfnt_off00007047.bin
30ed935d5a2cc29e7ee0c8e6c212929aaff5b11368c1d90ce266aef429422699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7047 10192 bytes

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