Malicious PDF — malware analysis report

Static analysis result for SHA-256 4558019d0b187a1a…

MALICIOUS

PDF

45.6 KB Created: 2020-08-06 06:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4cd27e1354d29464a097a09496afeaf SHA-1: 64146de9888249a780c99b407ca6ce35924e6e8c SHA-256: 4558019d0b187a1abb873e82fd0f2bf2c51662a97d0722c56530ab55c3e647c0
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=pdf+to+word+document+download+free'. This redirector is likely used to obscure the final malicious destination. The document body also contains the same lure text and URL, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=pdf+to+word+document+download+free
    • http://datafamel.keithnbeverly.com/uploads/1/3/0/9/130969656/tufirejegozowoz.pdf
    • http://files.bluecarpetcorridor.org/uploads/1/3/0/7/130739713/raduni.pdf
    • http://files.inspiredbyadele.com/uploads/1/3/0/8/130874554/daxesagezomusisatem.pdf
    • http://files.olyvias-collection.shop/uploads/1/3/0/8/130874148/ad19147490d.pdf
    • http://lexobop.androscogginriverwalk.org/uploads/1/3/2/3/132303035/napapudetira.pdf
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/lenaval.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/71269834521.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8801/files/wapidoxuwixaromatep.pdf
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/bojaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/dekotofulususebapamimuguk.pdf
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/samufuwiwawidisajenedis.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/lumekibirizomokane.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/97269136768.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/gogoxazosubamijawexutafe.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/sogevomejiro.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/barbarians_of_lemuria_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/potulebi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/febuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/2553/6936/files/waburutugidejipimanug.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/roronakafedane.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_off0000744a.bin
6e647496caceab912da5f1d175051cc98fc34c4973cf5640cc31f2aac42fae27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 5084 bytes
font_01_sfnt_off00008590.bin
7b35ebd9237eaf07e1dfb031517e6fd671437d831ddce00ee9f1e53d0a0b456f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8590 10412 bytes

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