Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca5360cc8b1ad2e2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-24 04:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 655cc6d3ce3c34fa8306238d9d5fdaba SHA-1: 22e9981329d5af94b781e55c81a8de92e2dd7bad SHA-256: ca5360cc8b1ad2e290dc198cb71977ec3293a003533af6b9de29af02ad24a1ae
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=video+editing+software++filehippo'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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=video+editing+software++filehippo
    • http://files.cleartally.com/uploads/1/3/0/7/130776745/liruzeziditosinuvo.pdf
    • http://files.anointedpropheticartist.com/uploads/1/3/1/4/131437657/pefonas_gusugapofe_sopuxut.pdf
    • https://cdn.shopify.com/s/files/1/0459/5263/0943/files/ssc_mts_admit_card_link.pdf
    • https://cdn.shopify.com/s/files/1/0464/7190/5448/files/viber_app_for_android_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0439/4831/0683/files/vuxuduso.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/may_calendar_2018_printable.pdf
    • https://cdn.shopify.com/s/files/1/0435/6790/6979/files/wawuxuporopigomomiwesara.pdf
    • https://cdn.shopify.com/s/files/1/0454/8090/2806/files/telepowufo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/32303899124.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/bloodborne_dungeon_trophy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/agentes_auxiliares_del_comercio.pdf
    • https://cdn.shopify.com/s/files/1/0451/4299/9194/files/adobe_acrobat_pro_change_to_word.pdf
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/tai_ban_ca_777_apk.pdf
    • https://cdn.shopify.com/s/files/1/0447/9080/8727/files/the_reader_bernhard_schlink_download.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_off0000629d.bin
954a3c73515d6c2e422870321fa4297d2d7219264e951d323240db73f4b7b837		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629D 5360 bytes
font_01_sfnt_off000074ef.bin
2d63f1f9611fba8e2c7d0e67ba1a6522c244b7693292184b10b7da63c52deaaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EF 10396 bytes

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