Malicious PDF — malware analysis report

Static analysis result for SHA-256 34becffba44907a3…

MALICIOUS

PDF

40.7 KB Created: 2020-08-13 23:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 684846f4a09e88b0b197663b24f6ecb7 SHA-1: d11b92af336942c70fff9634938f8191544ae26e SHA-256: 34becffba44907a3d0575975d2e63b1985a2c05ea690e4c9af85a30f4cd8d336
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=android+emulator+for+linux+ubuntu', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external links and a malicious redirector indicates a phishing or scam attempt.

Heuristics 3

  • 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 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.ru/pify?keyword=android+emulator+for+linux+ubuntu
    • http://fabosatib.behrendsfeed.net/uploads/1/3/0/7/130738848/4198509.pdf
    • http://files.hyojinlee.com/uploads/1/3/2/7/132710795/8063278.pdf
    • http://pajer.magiciansofmythology.com/uploads/1/3/0/7/130740062/nunokovibanonip_nakiva_ladidigosojaxen.pdf
    • http://dolaxi.thedailydelaney.com/uploads/1/3/2/6/132682076/navimokap.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/97110348743.pdf
    • https://cdn.shopify.com/s/files/1/0430/3739/3049/files/bronchospasm_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/82917731542.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdf
    • https://cdn.shopify.com/s/files/1/0435/0869/5192/files/5246028978.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/miwepujekeluvi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/actiontec_c1900a_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/33093731422.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/66485146239.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4334/files/cinquenta_tons_mais_escuros.pdf
    • https://cdn.shopify.com/s/files/1/0439/5512/6430/files/download_barzanji_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0430/4607/6565/files/xasimifijuviv.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_off00006235.bin
d4cbba6edab9ee8d1283edc5aa75eb479e871edef825476a15c850adb478f218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 5072 bytes
font_01_sfnt_off00007359.bin
836df438b3c04c5e908dff6b71730b8fd4841254505eed78a2bf224d28af0e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7359 10192 bytes

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