Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a03fdddadf12de2…

MALICIOUS

PDF

46.4 KB Created: 2020-08-20 10:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88921294581fba07fc00afd5fbc0f0ba SHA-1: e4165b4e01ae8e5652dfebc60135d11f6779aa89 SHA-256: 3a03fdddadf12de22f3d90915501007156e8118c2ee0517a71f60ef7b9577e98
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains an embedded script payload and malicious redirector links, indicating an attempt to lead the user to harmful content. The document body, though obfuscated, contains references to a 'Jasper report table footer' and includes the malicious URL https://ttraff.cc/pify?keyword=jasper+report+table+footer, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent.

Heuristics 6

  • 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 script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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=jasper+report+table+footer
    • http://xorunudej.tflorian.com/uploads/1/3/1/4/131483068/xumiwujekukupog_xigovokad_manixapaxe_fasexagafuf.pdf
    • http://satosuf.leapfroglicensing.org/uploads/1/3/1/3/131398351/ramuv-xivewoferodo-fomeju.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/41244656702.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/pizabamijapenuxofapojelel.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/buvawalulivu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7565/7125/files/active_directory_administration_with_windows_powershell.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/fetunobukato.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0902/files/52188271485.pdf
    • https://cdn.shopify.com/s/files/1/0454/3581/4046/files/bantam_lake_ct_fishing_reports.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/sirafejegarujinepilubade.pdf
    • https://cdn.shopify.com/s/files/1/0451/3228/4057/files/a_level_chemistry_edexcel_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/nusafogofe.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00002a33.bin
28193c7d2f8912e3f2810c5d277c42c928de4400985c15543da85453d476ec48		 pdf-embedded-script PDF decompressed stream script payload at offset 0x2A33 114 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).
font_00_sfnt_off00006baf.bin
7c67e7cd40d668361f21095d119c141ac1603b7a782df2e4440f903f6a2535f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAF 5024 bytes
font_01_sfnt_off00007cd1.bin
2fe69d7321f96c2ba567feaab6280dcf7fe733b5804d0f3822ee05592c478e27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD1 15340 bytes

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