Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22bcff71601abe2…

MALICIOUS

PDF

40.9 KB Created: 2020-08-21 20:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b174209885dd6a8d619670446546fe8 SHA-1: 1e5037e5ec2bd5d7fc9ef6a74a3078207702c296 SHA-256: d22bcff71601abe2fced324c017ddc91cc82a76632323b3ec636cc910c7a41c3
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to known malicious redirector infrastructure. The primary malicious URL, https://ttraff.com/pify?keyword=java+windows+7, is designed to redirect the user to further malicious content. The document body, though heavily obfuscated, contains references to 'Java windows 7' and the redirector URL, suggesting a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO poisoning attempt to distribute the 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=java+windows+7
    • http://files.fittingroomligonier.com/uploads/1/3/0/8/130814672/sodumavasoso_sugenufefigu_tinivotosuna_sezomojodupebe.pdf
    • http://files.gehringerwines.ca/uploads/1/3/1/6/131606186/ralanojoz_zodufefu_luxedek.pdf
    • http://nuxumuvir.babyg-lash.com/uploads/1/3/0/7/130775583/1617803.pdf
    • http://durow.riveflowyoga.com/uploads/1/3/1/4/131454950/buzifusalatapos-zeliwirabejepe-fepemaletotedet-gupozitoxuwep.pdf
    • http://files.alittlelively.com/uploads/1/3/2/6/132683154/de65e0cdbd396ea.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/bufeguvami.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/belageddu_yara_mukava_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/lawn_mowing_business_start_up_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6904/files/73918636305.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6513/files/warframe_ivara_farming_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/28713189555.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/vogatasiran.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/91795418246.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/fuzuli_su_kasidesi.pdf
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/95582351651.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/1/0429/3961/3347/files/fuzuli_su_kasid

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006309.bin
a5aa029a4365d3b73e3930bdca8651e238f18a5ceebe9b6c1dbb82f96138b411
pdf-font-stream PDF embedded font (sfnt) at offset 0x6309 4912 bytes
font_01_sfnt_off000073ec.bin
7bf4d8cb3a249f29f16a84b026976cb4aa5068a5697ac07bd8848f8f457edf58
pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 10308 bytes