Malicious PDF — malware analysis report

Static analysis result for SHA-256 f871926a62b81105…

MALICIOUS

PDF

43.0 KB Created: 2020-07-31 06:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7abdc5513a9e0579f5bc8ae47676ef34 SHA-1: e0ce5d0f8e1cfc37e316dd8dc5f93d84b86a308d SHA-256: f871926a62b81105926c2e00649b5a953e5869878ef236f94f5687a72da11683
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector, suggesting the document's primary purpose is to drive traffic to malicious sites. The document body, though heavily obfuscated, contains keywords related to score sheets, likely a lure.

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=official+badminton+score+sheet+pdf
    • http://files.tukatafoundation.org/uploads/1/3/2/8/132814990/166765.pdf
    • http://files.eagletheatrecompany046.com/uploads/1/3/0/7/130739101/pasibisudopomowoluto.pdf
    • http://files.iamscientiste.com/uploads/1/3/0/7/130739155/09a234aa63e54.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/27604891315.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/zageweke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rokagarunawawutasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/52803275630.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/rojiditiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/nuzudexesazosirilaxaluti.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.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/
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/528032756

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b71.bin
6399894c66ac700f2a9b58429df4dd1962ea780e82edd324fae717594e6339b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5348 bytes
font_01_sfnt_off00007d60.bin
cd612ba328eb50251a4388349a257640fb035be40214d9b17e771e731f2b7ab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 9856 bytes

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