Malicious PDF — malware analysis report

Static analysis result for SHA-256 590f7c1363628b6c…

MALICIOUS

PDF

41.0 KB Created: 2020-08-13 21:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 761cf7077ccbccfd009e9844430dd7a6 SHA-1: 504f2f2b16d2f19ae234294faf420f4806357522 SHA-256: 590f7c1363628b6cdec1e3ddb9ccc25c338062d87cee91ae3d0f85f64fed2def
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This behavior is indicative of a link farm designed to manipulate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cost+control+techniques+in+manufacturing+companies+pdf.

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=cost+control+techniques+in+manufacturing+companies+pdf
    • http://files.goatskins.com/uploads/1/3/2/6/132681033/rofiv_zixubiseberekok.pdf
    • http://files.ecardsvs.com/uploads/1/3/1/4/131406390/tuwajuvubavelol.pdf
    • http://files.louiselightworker.com/uploads/1/3/1/6/131607075/neresopik_rilovamuwowixu_sulitareniwemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/46358086254.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/99293825227.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/girenolakivur.pdf
    • https://cdn.shopify.com/s/files/1/0441/2217/7688/files/medical_english_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/luzizonovit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/17920158574.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/motepeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/30375163141.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/biological_science_let_reviewer.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/yayati_marathi_book_download_free.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_off000062ab.bin
8054a6dc378c1daadf1da8be9d04a01b32801961dd670a6a17a6e91486e5902a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 5600 bytes
font_01_sfnt_off0000757d.bin
5d440b78e5f5110ab7f6b4252a48abd12f28bf716b7388d02c78dff0dd8606f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757D 9752 bytes

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