Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7b127cb3611803…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 23:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7321f5d4c083b942372b7beedb9324db SHA-1: 2e3aa430c1dfb56eeb3108565e98b053477008e6 SHA-256: bd7b127cb36118035efe3e0b58edb1ebb87292c3646e80ead90d0f6238c4f2c2
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'invitation card free templates' and the malicious URL. This suggests a social engineering lure to redirect users to malicious infrastructure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=invitation+card+free+templates
    • http://files.learnrealfrenchnow.com/uploads/1/3/0/8/130815095/wofejitaxaguni.pdf
    • http://files.mreshistory.com/uploads/1/3/1/3/131381006/fosotodole-korinotanum-mufup-nowomopudosix.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/nuwejoleso.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/xuxorejivudeninosetu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/doweni.pdf
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/rebugizanujex.pdf
    • https://cdn.shopify.com/s/files/1/0437/8122/6657/files/buku_pintar_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0438/8611/7032/files/senior_sales_manager_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0440/1361/7302/files/php_find_in_array.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/briefing_note_template_government.pdf
    • https://cdn.shopify.com/s/files/1/0440/6873/3078/files/denaselinetutirefifo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/zasatomujevuzi.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_off000061e1.bin
3997fc0f56624f524722b4e7b6f1ee28b0b92233aa6c7baf9ce9a31770c7942e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 5300 bytes
font_01_sfnt_off000073d0.bin
17e7013aa38e7ac0cda4a5566918b33436f96795b0f7867cf253dd82ee70d0dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D0 10164 bytes

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