Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f8bc5a4a13a39c…

MALICIOUS

PDF

37.5 KB Created: 2020-08-26 07:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95d9ac0cb1e78b993d2f01b6bbcfaa48 SHA-1: 9af0c475032f8c666355691859bd46a81d2461e8 SHA-256: a1f8bc5a4a13a39c1933d589fca1daca7d8b6eda3b30e75711d7678a1e71e5bc
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=star+wars+complete+vehicles' which is likely intended to lure the user to malicious content. The presence of numerous other PDF links suggests a link farm for SEO manipulation or traffic redirection.

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=star+wars+complete+vehicles
    • http://files.hawthornepopwarner.com/uploads/1/3/1/0/131070859/4496006.pdf
    • http://zewodeko.theboarddoctor.info/uploads/1/3/1/3/131384575/kakak-sajolufikareti-rufamowivasol.pdf
    • http://selajenaz.janellesmithnutrition.com/uploads/1/3/1/4/131483603/2ef9b.pdf
    • https://cdn.shopify.com/s/files/1/0434/0924/4317/files/balancing_algebraic_equations_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/aosp_and_build.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/baxugibotadaka.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5976/files/47273078350.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/48193370564.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/bavelabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1247/files/23288877705.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/60315433440.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/bevezuzamo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/vobuzixagelux.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_off000053b3.bin
568440644319314ce832b3b086c96921d982729c83d5df80d74705352527797d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B3 5428 bytes
font_01_sfnt_off00006611.bin
562cdb8279e3d2c5c62835c0b00accb4cd7986343cde3690ac8d8b31633cf424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 10552 bytes

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