Malicious PDF — malware analysis report

Static analysis result for SHA-256 c493351647d38323…

MALICIOUS

PDF

71.7 KB Created: 2020-08-08 00:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ddd8a5f4fa15dea490a3f7bdb50cfa SHA-1: 5b77a0916035ad0f23f867852b47f3fba6c86ea5 SHA-256: c493351647d38323484bfd7a26927047db34738b7ac4f465638eeae519d0371c
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to lure users into clicking the link, likely leading to a malicious download or phishing page. No scripts were extracted, limiting the analysis of further execution steps.

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/wb?keyword=hydrogen%20bonding%20and%20boiling%20point%20worksheet%20answers%20chapter%2015
    • http://daxolujud.crit.cloud/uploads/1/3/2/7/132710712/bezekesamanipefelel.pdf
    • http://files.pierolorenzorealtor.com/uploads/1/3/1/4/131453592/b81d236.pdf
    • http://files.usasurvival.org/uploads/1/3/0/7/130738850/39db23440928323.pdf
    • http://fowujaw.mikaross.com/uploads/1/3/1/4/131453540/gamotixepegiduwip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/22673364575.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/fojebage.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/britannia_products.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/con_funk_shun_love_s_train.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/rowirajogupalamibosem.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/bromelin_propolis_spray_bula.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6807/files/simple_past_tense_exercises_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/57130343779.pdf
    • https://cdn.shopify.com/s/files/1/0432/1860/0103/files/beleridowanijejol.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/79770893201.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb72.bin
f999ea050a24a5b5647ab661050a171c06107fece1455851e2ce431681d5145d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB72 5868 bytes
font_01_sfnt_off0000cf83.bin
f434a3ac4ecc597125b6a43f0866d38f2fc964e455e98a10a2c9474402c4eefe
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF83 14180 bytes
font_02_sfnt_off0000fc3a.bin
1dc1b93ba8805af470257c82866b29e907d0b64c535949fbf11b885119347665
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3A 16112 bytes