Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a5c8ada89b2418…

MALICIOUS

PDF

43.8 KB Created: 2020-07-29 14:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71189109ca0888963ba4391be27c33e9 SHA-1: d815396c51a19c78e6ebd4dc6af2151ac271b112 SHA-256: d8a5c8ada89b24181c282e60e5de7abe8c3db407b01d16f8fbfe6eab1bc8d05e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=asciidoc+pdf+themes'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of a link farm further supports this, indicating an attempt to manipulate search engine results or distribute links across various platforms. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=asciidoc+pdf+themes
    • http://files.teamvelocityvbc.com/uploads/1/3/1/3/131383255/4295366.pdf
    • http://files.chimachancreations.com/uploads/1/3/1/8/131871569/lonaxixedokoxam_dadopituzaguli.pdf
    • http://files.periodisasi.com/uploads/1/3/1/1/131164462/lajiworusalima.pdf
    • http://files.uprisingstarsinc.org/uploads/1/3/1/3/131379045/gowofikur.pdf
    • http://files.hendrygeosciences.com/uploads/1/3/2/7/132712234/jiboketatik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2313/files/nebudimomuno.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1712/files/zewavujivumaziga.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/71657516130.pdf
    • https://cdn.shopify.com/s/files/1/0432/3154/3463/files/wuzekininafobikusurebat.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/nanolodakemakawoxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7965/files/ximigor.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/67674234106.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/xadoravosin.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/gudanidaxisamu.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_off00006a06.bin
dfda7ed2b5cf5d223d0734437abb687f305b6399b3c1dc7f41e8e03bef623aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A06 4728 bytes
font_01_sfnt_off00007a1e.bin
747fdd6fcc250e59e4dea266ab4110f7f159006fd3127881fb802dd917f2f464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1E 12688 bytes

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