Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5fe7a5973a9b8e4…

MALICIOUS

PDF

40.2 KB Created: 2020-08-05 04:40:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7840f1d0bc107f85f7aafaeba316b0c2 SHA-1: cc8342efcc1a713e4b7601885c9d0ac63e2777a9 SHA-256: e5fe7a5973a9b8e4f6e94d4054f7b0bc4361676094f84457d7ef5721c0dffcc4
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior by embedding numerous external PDF links, one of which is a redirector. The document body text, though heavily obfuscated, contains the string "Times magazine pdf" and the malicious URL, suggesting a lure to trick users into downloading further malicious content. No scripts were extracted from this sample.

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=times+magazine+pdf
    • http://files.refvol.org/uploads/1/3/1/4/131409017/pawejenibine_pizizita.pdf
    • http://files.avistonlegion.com/uploads/1/3/2/8/132814097/412833.pdf
    • http://files.wanderlustvip.ca/uploads/1/3/0/8/130874252/fofimenupe-getakizasedupu-fisinulofidamo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/48057836543.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/96238488057.pdf
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/wovododetomar.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/tinker_tailor_soldier_spy_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/lesidurodivitogovigeluwep.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/kebetozomarugusoxito.pdf
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/lsba_membership_directory.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/65455214596.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/jizeluni.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/novuferikerita.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_off0000606f.bin
1bdd344b1019fec8baa18bae67b19c11e49d5aab83410db3b573086bece6863a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 5232 bytes
font_01_sfnt_off00007238.bin
9eafa8e45fa705cb6b824dacf339f651424875d88512c13849e1341bcb861ec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7238 9896 bytes

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