Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f400f54f5a771b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-28 04:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b36cd6488334e833b1433464f3369fd SHA-1: 0b152c95e1e64543062b48423d02de91dfd4d4f1 SHA-256: e0f400f54f5a771be7677abe8d075e10625c0c790e7209e4026fe8c7b7df67f3
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 external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to a 'bowling scoring practice worksheet' and includes a URL that appears to be part of a link farm designed to manipulate search engine results. The primary malicious URL identified is ttraff.ru, which is flagged as a 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.ru/pify?keyword=bowling+scoring+practice+worksheet
    • http://fomagolu.yogatheartofwellbeing.com/uploads/1/3/0/7/130776326/91ddbd0cac72.pdf
    • http://rakebulib.emmaunderwood.co.uk/uploads/1/3/1/0/131070450/viwexij_metor_jefada_dewepijuwiz.pdf
    • http://raxarak.bringalessiahome.com/uploads/1/3/1/8/131871721/zuzozusovesezax_pojufodafebegig_mulakibijuwulaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/android_phone_antivirus_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/22883556679.pdf
    • https://cdn.shopify.com/s/files/1/0454/1009/1176/files/insensibilidad_a_androgenos.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/70173705177.pdf
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/elder_scrolls_legends_deck_builder_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9570/3204/files/10564878660.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/engineering_drawing_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0440/6598/0581/files/xoroxuziwijudejini.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/tugomisijakifat.pdf
    • https://cdn.shopify.com/s/files/1/0439/6482/5758/files/kala_bhairava_mantra_sadhana_in_telugu.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_off000060ab.bin
df472c2a78000c8a11aafa350671c5d5676a4cbe3fec06fd65a733216a838e2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AB 5400 bytes
font_01_sfnt_off00007319.bin
f7b0cb390100000896ee949c80eabfc3c88b4f299ff33f5c6968226f7c3e31f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 10376 bytes

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