Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd595d48786a1da…

MALICIOUS

PDF

33.8 KB Created: 2020-08-11 23:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53a4527bbacc9c37fbee41d4b4e41265 SHA-1: 3ac72d991ac770cdc9badc4d6f8a2560ca40a99c SHA-256: ccd595d48786a1da5d88b3307f7b1d7639e33ad85d1a4d2f333ef845a46df53d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Wordly wise 3000 book 7 lesson 1 pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of multiple Shopify URLs, some marked as benign and others unknown, indicates a link farm strategy. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

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=wordly+wise+3000+book+7+lesson+1+pdf
    • http://files.saintgeorgechurchok.org/uploads/1/3/2/6/132695832/powipuresukek.pdf
    • http://zopemoze.neisdoap.net/uploads/1/3/1/3/131383664/miturozevew.pdf
    • http://xoxewagi.taxcorestaurantpv.com/uploads/1/3/2/6/132695832/9499532.pdf
    • https://cdn.shopify.com/s/files/1/0447/1518/0188/files/44524971345.pdf
    • https://cdn.shopify.com/s/files/1/0438/7245/2776/files/xixazudomidaxiramewik.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/computer_application_in_e_business.pdf
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/kelasosamafaki.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/53485301453.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/kuvuzitaneb.pdf
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/kaxunejobekuzoporus.pdf
    • https://cdn.shopify.com/s/files/1/0432/2554/6912/files/xamedijibujoranasoj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/sajab.pdf
    • https://cdn.shopify.com/s/files/1/0428/2993/8855/files/overt_aggression_scale_modified_for_neurorehabilitation.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/dulikaxafakitixisakifu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9301/5195/files/kizuvavina.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/29559272438.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/2020_aha_guidelines_for_cpr_and_ecc.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_off000047f7.bin
c1f95d0a120af29581c93cd4eec11d258a91202d8a0a6f03fe50aa3ffbfbfab1
pdf-font-stream PDF embedded font (sfnt) at offset 0x47F7 5676 bytes
font_01_sfnt_off00005b81.bin
a077b8e2b6559cc8a76155ac04d980743d27f5f245552570683933c1b3badc3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B81 9036 bytes