Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ec458271b45bd5…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 08:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fac24e12603143f1f26b4443dddb8dc SHA-1: 40d0049de03af4f450eed6ba286c15a599d8d016 SHA-256: 84ec458271b45bd5fbd941bb1b89e38bc0ba034e536675246cd2115950a66a4e
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1204.001 Malicious File T1059.003 Windows Command Shell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to deliver a payload. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, and includes a lure to copy/paste content into a shell, suggesting an attempt to trick the user into executing malicious commands or downloading further content. The presence of a visual download button reinforces the social engineering aspect of this attack.

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=iso+windows+7+usb+bootable
    • http://files.donnellamonk.com/uploads/1/3/1/6/131606923/nalow_foganozab_pusobubozu.pdf
    • http://files.steveneillsgarage.com/uploads/1/3/1/3/131379049/nexokala.pdf
    • http://sizevig.tivertonhsboosters.com/uploads/1/3/0/8/130874284/pesewugebobebusesix.pdf
    • http://rewada.greenkayla.com/uploads/1/3/2/6/132681352/b0ec945b.pdf
    • http://files.xintongwang.site/uploads/1/3/1/6/131636719/bixiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/dumezagezedenize.pdf
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/nafedupirinugezuwogokev.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/zobufumugake.pdf
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/88233012692.pdf
    • https://cdn.shopify.com/s/files/1/0432/3996/4834/files/anabase_saint_john_perse.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/xasixonukefavopawubuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/22598323912.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0314/files/45998094999.pdf
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/nogigofomezinem.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/50722127200.pdf
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/jowibolepuloxonusote.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/42338833491.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/cerebrovascular_disease_review.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_off000062b5.bin
4a0ab02b897fea8a53c0d7c95ffd40fdd82ecc1c2776a60b99726b2ffe796650		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B5 4972 bytes
font_01_sfnt_off000073c3.bin
3150aed24890edced90cb0cb49311b67b5af2e9792d30967a50e23c5c2101659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C3 10248 bytes

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