Malicious PDF — malware analysis report

Static analysis result for SHA-256 38999fc5223a26af…

MALICIOUS

PDF

36.7 KB Created: 2020-07-29 11:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 966e15a3e24d8475f58656be8f969847 SHA-1: 78efead9b106cf86c1c683bf22d8cbcde0290e65 SHA-256: 38999fc5223a26afa9c063a48b1c1deb6afb9cdae49035a19854e61759b4a713
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This indicates the document's primary purpose is to lure the user to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting a broad distribution or SEO poisoning tactic. No scripts were extracted, and the document body was heavily truncated and unreadable, limiting further analysis of the specific lure.

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=exercice+cellule+animale+et+v%25C3%25A9g%25C3%25A9tale+pdf
    • http://files.gallatinmontessorischool.com/uploads/1/3/2/6/132695828/pijemejo-wudovigimo-lurezupiku.pdf
    • http://files.barnummassage.com/uploads/1/3/0/7/130776257/5056992.pdf
    • http://files.bishopsstortfordjudo.com/uploads/1/3/1/6/131608016/vogeletuxu.pdf
    • http://files.bishopsstortfo
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/69331040603.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/wenutudaweko.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/81189287263.pdf
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/wujafivijijinok.pdf
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/dusofivib.pdf
    • https://cdn.shopify.com/s/files/1/0436/4242/1398/files/mikudafazunodupe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/12035406071.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/53526756408.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/fuwapasukujelusavopivoku.pdf
    • https://cdn.shopify.com/s/files/1/0434/0711/4391/files/pilofafaxumevuropet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6413/9674/files/48855160265.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9412/files/pejibimevukezupev.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/wigonovibunibijuka.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_off000053d2.bin
574f0c74f3c2146079490074277d1cb9a9ca4a3f832d1d6b122ddadb9bab5ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D2 5296 bytes
font_01_sfnt_off00006580.bin
455fe96fc70a2dd9c122af0e6ae8990175842cae0136bbdecfbe7ac68c7221f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6580 8976 bytes

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