Malicious PDF — malware analysis report

Static analysis result for SHA-256 eedd62c00826c8c6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 03:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d857c9958ea55ccfff336aea9d908f5c SHA-1: 0d2d40357b1e3f797bc0dfe4acc7b18abae55fe1 SHA-256: eedd62c00826c8c613442760447d40e443aa815fe0feb127bf5c5ae2b30a7f32
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for 'basic english grammar book for beginners pdf' and includes a visual download button heuristic. The primary malicious URL is https://ttraff.cc/pify?keyword=basic+english+grammar+book+for+beginners+pdf, which is likely used to redirect the user to further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=basic+english+grammar+book+for+beginners+pdf
    • http://files.middlelanefarm.com/uploads/1/3/2/7/132740458/zurogomape.pdf
    • http://files.rachelbeckles.com/uploads/1/3/1/0/131070313/6113ed12.pdf
    • http://zufaso.samaacollection.com/uploads/1/3/0/9/130969366/xilasu_fogarogud_gikujunelu_farazameve.pdf
    • http://zixaged.mayberrysatterfield.com/uploads/1/3/1/3/131379530/3288108.pdf
    • https://cdn.shopify.com/s/files/1/0428/5127/0815/files/rejakolopejet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/advantages_and_disadvantages_of_participative_leadership_style.pdf
    • https://cdn.shopify.com/s/files/1/0441/1742/6328/files/preposition_of_time_and_place_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/52871629891.pdf
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/81418701790.pdf
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/project_report_on_electricity_billing_system.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/jufozadedezijigifam.pdf
    • https://cdn.shopify.com/s/files/1/0449/1591/6967/files/android_x86_oreo_iso.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/38160764539.pdf
    • https://cdn.shopify.com/s/files/1/0436/9491/5738/files/95902430245.pdf
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/30095153477.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_off00006996.bin
3b80bcd7e186bbf30ea644a4bc8fd8b7dca84902afc38bacb74c7a053fc73bbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6996 5820 bytes
font_01_sfnt_off00007d20.bin
d0d213c9f0b4cfd9fd9a0eb88a1cd396cdfbdd4eff033e8b487a0acb0ae49945
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D20 10524 bytes