Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a60af6a5f31270…

MALICIOUS

PDF

46.8 KB Created: 2020-08-13 23:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f8c4b78f1ec0cbbf800e25bee0d75bc SHA-1: 2702aec81bf59aef9cfe1f93e5e43bfecbbd5aeb SHA-256: 85a60af6a5f3127033d075b2c7c5d71f96532df31e44d857fba50424b5cf61a6
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This link is presented with a lure for a 'Windows 10 latest iso', indicating a phishing or scam attempt. The document also contains a PDF link farm, with one of the links pointing to a Shopify domain. The presence of these links and the urgency lure suggest a social engineering attack designed to redirect users to malicious sites.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=windows+10+latest+iso
    • http://files.rebalancing-edmonton.com/uploads/1/3/2/7/132710759/fovivun_xivap_gasafaf_dutali.pdf
    • http://files.homesteadperennials.com/uploads/1/3/2/7/132740467/fiduxutodorabex.pdf
    • http://bowizisib.assetprotectwa.com.au/uploads/1/3/0/8/130874601/43c16997b9.pdf
    • http://files.glammoms.us/uploads/1/3/1/4/131438741/devuku.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/43859460178.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/carnatic_music_lessons_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/89879641126.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/doxipogobuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/vezupevatomumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/ziriwovabovaduvelipilux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/nusaboxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xasaxikopakepiditewevumub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/lipifajutikibose.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_off000076b9.bin
8b91285974b863c3c62944406447808ade3f52de9140beb2ca480a6dca596a39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B9 5020 bytes
font_01_sfnt_off000087f6.bin
b478192d3849b3cc58003b438b446a59af06f4d2f436e752045364a5e88613c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87F6 11416 bytes

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