Malicious PDF — malware analysis report

Static analysis result for SHA-256 2218fbe4bfcbc790…

MALICIOUS

PDF

38.5 KB Created: 2020-08-24 17:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75f8efd1f2d45de47b3ab829dc958727 SHA-1: 631924f17a2819c75b4352d8691f093c89c4a55d SHA-256: 2218fbe4bfcbc79064c957e85324ce56a2f57bcad36988eb93f9f8e946c77fa7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. This indicates a link farm strategy designed to obscure the ultimate destination and potentially distribute further malicious content. The presence of the redirector URL https://ttraff.cc/pify?keyword=split+flex+head+king+sheets is a high-priority indicator of malicious intent.

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=split+flex+head+king+sheets
    • http://soseniwe.lifetimeepoxyfloors.com/uploads/1/3/0/7/130776321/0fb88f3881.pdf
    • http://files.silverdollardogs.com/uploads/1/3/1/4/131483391/wukivifiwopajij.pdf
    • http://files.dendaledairygoats.com/uploads/1/3/1/8/131856186/makugalokufivixagi.pdf
    • http://files.atcentershop.com/uploads/1/3/0/8/130814227/xewaxabebup-dines.pdf
    • http://files.loudounlyricopera.com/uploads/1/3/1/4/131455543/6504047.pdf
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/junejegibewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/duxureba.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/xekuxamoligibakapibu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/birrell_and_davies.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/3383113973.pdf
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/65061457818.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1329/files/pokemon_heart_gold_kanto_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/5112498088.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tefabojukiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/2874/2298/files/mitsubishi_mini_split_installation_manual.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_off000056ef.bin
134377edc9d5028b25f548690f437392e6503536180c8c1baee2be8a218c2f47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56EF 5444 bytes
font_01_sfnt_off00006972.bin
7f6aa52830d8cad84c7756a4f958e95da761b5c0acdaab7d68377c52986ec6cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6972 10560 bytes

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