Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94be6fa1b2c2d47…

MALICIOUS

PDF

43.9 KB Created: 2020-08-25 13:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d892b13d19857121873af516f2435e4 SHA-1: 7bcc0ddaec6597a5a37f11c609e08263c1d85f7b SHA-256: d94be6fa1b2c2d47ccbbddbcaf3e46c4778e8653b0d89a106ec080229e0c766c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a job description and the malicious URL. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content.

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=template+job+description+administrative+assistant
    • http://zilokanu.retromobileblog.com/uploads/1/3/1/6/131636725/4345312.pdf
    • http://files.hausstudio.org/uploads/1/3/0/7/130775220/gamugefaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/53697588967.pdf
    • https://cdn.shopify.com/s/files/1/0457/3672/2588/files/common_factoring_worksheet_grade_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/2852/8799/files/annamayya_telugu_songs_free_doregama.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/latitude_5300_spec_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6194/4228/files/75594375748.pdf
    • https://cdn.shopify.com/s/files/1/0435/5165/4047/files/bloqueo_av_de_alto_grado.pdf
    • https://cdn.shopify.com/s/files/1/0434/8608/5277/files/cds_1_2020_official_notification.pdf
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/66198307586.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3418/files/xokeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/83822185981.pdf
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/fesimibakaxurulefimomaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/2752/8861/files/pain_agitation_delirium_guidelines_2020.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_off00006ccf.bin
b334ec8833933cf00420f5b3aabb93bcd945cccc05830ab578af83e8d985b8e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCF 5444 bytes
font_01_sfnt_off00007f3c.bin
ab9c7454603abd572e7fba6d3b2d4f59481406e7ba472a3917b5b7ca6c917a26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3C 10316 bytes

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