Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33566e540c638b2…

MALICIOUS

PDF

42.1 KB Created: 2020-08-13 22:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73d18db150a323af1a6eb3ae33090342 SHA-1: c3592b025310e48e4da0834ddcdfe8fbc10e900c SHA-256: e33566e540c638b22e119490dd544530d3556e50ac05e9511e27d783a90974a6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a visible URL that matches this redirector. This suggests the document is designed to trick users into clicking the link, likely leading to a malicious site or further payload. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to potentially improve SEO or distribute 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=balancing+chemical+equations+worksheet+9th+grade
    • http://files.kcga4u.com/uploads/1/3/0/7/130775092/6557457.pdf
    • http://memowar.healthyfoodsolano.org/uploads/1/3/1/3/131380429/3d8f09176740a8f.pdf
    • http://files.maverickdanes.com/uploads/1/3/2/6/132682970/gukozetebifi-zuxizevewokoraf.pdf
    • http://files.jenniferbetteridgephotography.com/uploads/1/3/1/6/131637385/buvijefefivovuw.pdf
    • http://files.elpasohousebuying.com/uploads/1/3/2/6/132695805/ae505.pdf
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/xenekuwozavirag.pdf
    • https://cdn.shopify.com/s/files/1/0437/9541/5189/files/21688819392.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/9931365359.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/zizaraxapi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/islamic_calendar_2020_saudi_arabia.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/lozokatibovove.pdf
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/convert_to_microsoft_word_document_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/anlauttabelle_daz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/vefalorar.pdf
    • https://cdn.shopify.com/s/files/1/0435/4670/6088/files/totatikojipofadigof.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/mekidasapis.pdf
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/6753156652.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dilos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/nurepepumijife.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_off00006556.bin
89001f2439bba07ff331d6a2d97a77cb201ce9ce179ff9024f509bd86aaf3967
pdf-font-stream PDF embedded font (sfnt) at offset 0x6556 5840 bytes
font_01_sfnt_off0000790a.bin
8efee73a767721cc90eb76e5283e4943d0248baacad2f5c59593963dfa1e001e
pdf-font-stream PDF embedded font (sfnt) at offset 0x790A 9940 bytes