Malicious PDF — malware analysis report

Static analysis result for SHA-256 442269dbbf6a2bd4…

MALICIOUS

PDF

39.9 KB Created: 2020-08-14 04:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d559314d46d6ea36f94f54868603c788 SHA-1: 264b46d07277c305ca1b7a3bd5fb2c75cbe90334 SHA-256: 442269dbbf6a2bd499e7ee4028de5020dcf750639fb5cf40d5d4cb2f66d0eed4
128 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with at least one pointing to a known malicious redirector. The presence of a 'download button' heuristic further suggests a lure-based attack. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the link analysis strongly indicates a malicious intent to redirect the user to harmful sites.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=muzzle+flash+video+effect
    • http://zixexed.maderavistatownhouses.com/uploads/1/3/0/7/130776760/59a1b687853da.pdf
    • http://sujoninix.opnrc.org/uploads/1/3/1/4/131407921/kifulinakob_godulukoz_lokuvujele.pdf
    • http://lerut.unityofstockton.org/uploads/1/3/1/3/131384281/gokepuso-tudumiribab.pdf
    • http://files.breakingboundariesfellowship.com/uploads/1/3/0/7/130775032/196895.pdf
    • http://rebar.hydramovement.com/uploads/1/3/2/6/132682883/ruful.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/amoeba_sisters_video_recap_of_meiosis_answer_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/tanazozuvatelago.pdf
    • https://cdn.shopify.com/s/files/1/0446/1661/4051/files/les_clauses_du_trait_de_versailles.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/bram_stoker_dracula_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/8069/4437/files/71666838650.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/gafomugozin.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/3663033243.pdf
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/harry_potter_book_one.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/93859618760.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/15882270641.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/vopamolawikobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/restart_command_miunecrtaft.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_off00005ceb.bin
94ff2199b71dd38ce7c0d8d843415edac26cc527155b30cd539e4a7932a7fbbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEB 5128 bytes
font_01_sfnt_off00006e74.bin
8b1a855effff01bf4934c9db99429f529fdc608eaa6e5e0db3277f69659ffa26
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E74 10884 bytes