Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f87d48cb53bb783…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 02:17:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11db514a379bd187781a235a80344545 SHA-1: 8b97610b04d5d88c9c4f81bfb8ba49b550fe0330 SHA-256: 7f87d48cb53bb783e227b4c4ae0ed5c5f98a444c1f509c2394de969fba9a50e0
140 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to an annual report and the malicious URL. The PDF_SEO_LINK_FARM heuristic suggests this is part of a larger link farm operation. The SE_CALLBACK_LURE heuristic indicates a potential callback phishing or tech-support scam pretext.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.cc/pify?keyword=cie+financiere+richemont+annual+report
    • http://files.blushbrushandbronze.com/uploads/1/3/2/6/132682882/suwunazof_lobujobom_pefizovik.pdf
    • http://files.jerichoadaptstoys.org/uploads/1/3/1/8/131856476/soweduzaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8576/6561/files/71945867116.pdf
    • https://cdn.shopify.com/s/files/1/0432/8452/9310/files/35503106834.pdf
    • https://cdn.shopify.com/s/files/1/0436/8292/2646/files/international_economics_pugel_15th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8074/files/livabukojeki.pdf
    • https://cdn.shopify.com/s/files/1/0440/7649/9096/files/79362983142.pdf
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/47247506132.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/latudeguledexiweduteroda.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/install_android_studio_linux_mint_19.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/14595066208.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_off00005b10.bin
e94ff7e8870dff500a873e165130c21f76a7fe678db1c5b1afe2674b60a8fa91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B10 4980 bytes
font_01_sfnt_off00006bd8.bin
935606859e89ef41fb62dab7996d719184c132703ef152ed83856d352a75a2f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD8 10024 bytes

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