Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08fbaa34d2c7be1…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 21:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e3f13b7401e89bd21107220e844d906 SHA-1: 139fba6abf4f7e0971ea286f9df96a5eece051a5 SHA-256: b08fbaa34d2c7be19816a047e459c878a0bc2562b33579afb02deec98702c96b
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is offering an 'email extractor full version', which is a common lure. The presence of a malicious redirector and the lure indicate the document is designed to trick users into downloading further malware.

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=email+extractor++full+version
    • http://files.danstriathlonsite.com/uploads/1/3/1/4/131438405/179bda9445e8f.pdf
    • http://deguk.johndecastro.com/uploads/1/3/0/7/130776445/f02d66ca015.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2270/files/kipegumugugixa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/82891078863.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/6017544040.pdf
    • https://cdn.shopify.com/s/files/1/0438/0917/7762/files/wobawaxulakufukosut.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/jipekasokeximuxugarurevor.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/brother_mfc-_7860dw_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/sociology_1st_year_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5902/files/zamiwofifenawok.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/61098742999.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/honeywell_barcode_scanner_configuration.pdf
    • https://cdn.shopify.com/s/files/1/0437/0651/5611/files/serajuwoxekogofasolitok.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_off00005b6d.bin
3a545c0b3e0a80839497ad70844ce8e1af9ed0d1d1ac37bde4847d0ab3d28e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6D 5112 bytes
font_01_sfnt_off00006cc0.bin
9b07f34ac5fbd9e43155a5d3acd19588becf95a4f111884bd76fe9a23a0fcb1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC0 10300 bytes

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