Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0128957e463f90…

MALICIOUS

PDF

46.1 KB Created: 2020-08-06 07:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5da6875e2bc448d3bfde4adde2c0289a SHA-1: 48958a438dc1a9ec346af60b3e44db7cebe428b7 SHA-256: 1e0128957e463f9016b4e7caa20bd441736bcb61b1e13ad24e61a161640daa16
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=page+replacement+algorithms+examples+pdf'. The document body, though heavily obfuscated, also contains this URL and other links, suggesting a lure to a malicious site. The presence of numerous links, including those hosted on Shopify, indicates a link farm or SEO poisoning attempt to disguise malicious intent.

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=page+replacement+algorithms+examples+pdf
    • http://files.thepersonalconciergemn.com/uploads/1/3/2/6/132681576/wotivagusewil-musowilekija.pdf
    • http://files.forestburgumc.com/uploads/1/3/1/8/131871433/34b760f503.pdf
    • http://files.rosenelessen.com/uploads/1/3/0/7/130776268/pijefoxosilar.pdf
    • https://cdn.shopify.com/s/files/1/0444/8839/2871/files/ad_d_first_edition_monster_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/nimeluvusomogimerurovexib.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/89304479508.pdf
    • https://cdn.shopify.com/s/files/1/0436/5477/4949/files/ateroma_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/13236124364.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/jirozava.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/63501502650.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/lidokoxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/3033786916.pdf
    • https://cdn.shopify.com/s/files/1/0431/3959/6454/files/817320331.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_off0000767f.bin
45141e83e93a8ac73135e5a5beef26431577407e0bc944a4e870d8aeb045d888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x767F 5640 bytes
font_01_sfnt_off00008985.bin
78b748c55f62e0d1fa41b619ac474cedf5af89aed37dc7233ffb92dde387e07b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8985 9836 bytes

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