Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b502230ae5ae49b…

MALICIOUS

PDF

38.1 KB Created: 2020-08-17 00:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84c29cee4b8d7fd10d252d851d8c7455 SHA-1: b5bfeb773672213c3b5356e8a771f407b7e1a4cd SHA-256: 4b502230ae5ae49b4e00369fc59a69278f71b402e5c6213cb5d142989906a9ff
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, a technique often used for SEO poisoning or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=sonic+all+stars+racing+transformed+android+adreno'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The primary goal appears to be directing users to malicious infrastructure.

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=sonic+all+stars+racing+transformed+android+adreno
    • http://files.stephaniekaza.com/uploads/1/3/2/7/132710797/bokuwa.pdf
    • http://vebipanix.plazacateringboston.com/uploads/1/3/1/4/131438684/nalel.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/jivak.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/76893023059.pdf
    • https://cdn.shopify.com/s/files/1/0435/2524/3040/files/trigonometry_dugopolski.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/lusesekaxojopew.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/53431439284.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/arcadia_deck_plan.pdf
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/dumabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/sesejugupowiboravefolul.pdf
    • https://cdn.shopify.com/s/files/1/0428/3868/7900/files/rojezawelixekogunoja.pdf
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/korijufa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5498/9466/files/how_to_check_version_of_python.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_off00005644.bin
fa4ad844dea8137f83ef5f655840ab8cd7921bdf3141c79fd6a6eb726f90930e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5644 5444 bytes
font_01_sfnt_off0000689b.bin
46d721b0029524246d228910ad75a10006dbb5f53690533a925520d6d7223173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 10188 bytes

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