Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3db1b6e5f0e2e10…

MALICIOUS

PDF

43.4 KB Created: 2020-08-21 10:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46b7f0d641976ccd12165b029dfb4a09 SHA-1: a724141fc366a76189e84675ad6517d690b9d3b1 SHA-256: b3db1b6e5f0e2e10ea281c83c0689a93c9ab88e61632adab56124677a13a5de2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm tactic to distribute the malicious content.

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.cc/pify?keyword=bullet+basya+movie+song
    • http://files.maltipoos.org/uploads/1/3/2/6/132681479/zoxusekosalibu-kojoxizafojom-vujudukemota.pdf
    • http://files.wiscreenwriterforum.org/uploads/1/3/2/7/132712034/kavivadewimigo.pdf
    • http://satuwo.ahigherhealing.net/uploads/1/3/1/3/131384281/sofejixawepe-rinetamufigokux.pdf
    • http://files.tropicalcuracao.com/uploads/1/3/1/8/131856907/4010653.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/18670073278.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/gafoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/biography_book_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/zokijojutilal.pdf
    • https://cdn.shopify.com/s/files/1/0432/7355/2040/files/83050476393.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3507/files/sikoxub.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/risk_management_in_nigerian_banks.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/kowudasija.pdf
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/sodium_alginate_structure.pdf
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/69852661734.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5039/files/vidalia_onion_nutritional_information.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/anterograde_tomorrow_fanfic.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_off00006d92.bin
869b15ba966d82608bf73e25ebb6aca9bac5989586481d668a06ef937038d9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D92 5260 bytes
font_01_sfnt_off00007f78.bin
942a59167194a92e2c87858381d207390cc7dab6fba3af2feb2a14666ce4651e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F78 9752 bytes

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