Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ff662d58236b6f…

MALICIOUS

PDF

49.2 KB Created: 2020-08-16 14:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b80170b0afe83b0a97f02773884a4de SHA-1: e53075bc392912037fc44ad9920bc7d08e1ff982 SHA-256: e5ff662d58236b6fed6e84abe8487c13b07251182c63be0cf3c822cbbb2743a0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=akreditasi+psikologi+undip'. It also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning attempt. The document body contains garbled text but also includes the malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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.com/pify?keyword=akreditasi+psikologi+undip
    • http://files.basingstokeconsortium.co.uk/uploads/1/3/1/4/131483201/7462761f2f1.pdf
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/sine_taylor_series.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/7984596875.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/wojetepasix.pdf
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/askep_pada_anak_dengan_bronkopneumonia.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/93806794305.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/star_wars_saga_edition_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8896/9882/files/13916298108.pdf
    • https://cdn.shopify.com/s/files/1/0429/1156/3932/files/29555430687.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/rutenuvixinoloto.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8216/files/java_netbeans_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/detosibemovevixopenuvalam.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/77485064545.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ea1.bin
a24d8a77d62c04c4ac7ecccb89c2e7833065cb581c29ec6d018390019177b622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA1 5180 bytes
font_01_sfnt_off0000804a.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x804A 1800 bytes
font_02_sfnt_off000088d7.bin
a476b1675ead176eb8cc6edee1c4bf373355d07a03f70b85af5bbf9d9adc9c4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D7 15164 bytes

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