Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab98a8c179db876…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 16:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b4602961d21154c3f2c5c33b5f97930 SHA-1: e8b67ddf916a5ec2904cba24c7c4900ee2a290a9 SHA-256: 2ab98a8c179db8764b9edf6466877c96b4e10d857d53e80f560a45ba831083fb
150 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to lure users with search engine optimized keywords, such as 'Coreldraw file to pdf converter free download'. The primary link redirects through 'ttraff.com', a known malicious redirector. The document body is heavily obfuscated but contains the lure text and the malicious URL. The presence of numerous external links, many pointing to Shopify domains, suggests a large-scale SEO poisoning or link farm campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=coreldraw+file+to+pdf+converter+free+download
    • http://files.richlandareafarmersmarket.org/uploads/1/3/2/3/132303269/73cc8d18e73e4b.pdf
    • http://files.americaninteriordesigncenter.com/uploads/1/3/1/8/131871690/lofuzoxutoref_zavoxeronalokar_darotumodekud.pdf
    • http://files.matchmypartytheme.com/uploads/1/3/0/7/130775651/rujezela_jawabar.pdf
    • http://rojuju.plymouthmusiclessons.com/uploads/1/3/2/7/132740805/nojapesudifomej.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7942/files/schoolboy_q_hands_on_the_wheel_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/baponopevizava.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/rozoxozosojiwamazunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/72003112366.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/26927287345.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/juegos_psicologicos_eric_berne.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/arguments_for_free_trade.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/jfc_urban_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/bofupuju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedagefegumam.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/68451591972.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/birds_names_in_english_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/57614825336.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_off00006233.bin
e277b08855d1e61dc7bd85097ca8816e350e3ce28bdc4c8b4638f60932ad317c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 5028 bytes
font_01_sfnt_off00007373.bin
1d9d18211e0db660a6ad8cafd7eb1fa2b6bbb319c9af03bfde2435a984dddcb7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 13512 bytes