Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59e66b0e976115e…

MALICIOUS

PDF

39.7 KB Created: 2020-08-14 19:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08edadec6aae489ab55a7e4e3d57e1aa SHA-1: 06a279d82164285c55c63ebc972fca4d8a3cf188 SHA-256: d59e66b0e976115e8f7a43025804e662eb7ed6d748ab3990a9385e703b20deaf
160 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector, indicating a social engineering lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the redirector points to malicious infrastructure. The 'SE_CLICKFIX' heuristic suggests the document is designed to trick users into executing commands, likely to bypass macro restrictions and download further payloads. No scripts were extracted, but the overall pattern suggests a downloader or phishing attempt.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.com/pify?keyword=open+office++free+windows+10
    • http://files.kostichart.com/uploads/1/3/0/7/130775607/lamomirefimisiwuxafe.pdf
    • http://files.webwayplus.com/uploads/1/3/1/8/131871740/fupuzisodunamenup.pdf
    • http://files.aardvarkadaptivemodifications.com/uploads/1/3/2/6/132683181/nupikixit-webidaxoxid-relimimisi-geranikexedoji.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/botodojukazokuserimu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7572/3673/files/vermeer_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/waratavot.pdf
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/hcm_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/libros_abraham_hicks.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/rodovabagavewelezefodeze.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/past_simple_and_present_perfect_advanced_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/simple_algebra_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/cattle_production.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/10888479105.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/buzukemupopu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/sedopokoreludami.pdf
    • https://cdn.shopify.com/s/files/1/0436/9186/8310/files/5196777580.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_off00005dec.bin
c956ffc0acecc66c59f79f13c8437eac33fd3ed8286361a6c38cef4e01fa5880
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEC 5220 bytes
font_01_sfnt_off00006fdb.bin
28566d3ca1806e81516cb0014e3cde9ed2e0b45545d4702f872240b64ea7366d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDB 9980 bytes