Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e11b3ab9defa61…

MALICIOUS

PDF

121.5 KB Created: 2020-08-10 06:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a5d8b55df02b60109a9c9f2a31b021b SHA-1: ad913ab74e849f6a40bcd258703dbea3da0c34d4 SHA-256: 84e11b3ab9defa61add3897687375bfca2c3758d25fe94766027df2ca7c5b04f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'La importancia del bautismo en agua pdf' and the malicious URL, suggesting a lure to download a PDF. The presence of numerous external links indicates a link farm or SEO poisoning attempt to distribute malicious content.

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=la+importancia+del+bautismo+en+agua+pdf
    • http://files.amazingoliveoil.com/uploads/1/3/0/8/130873826/28cbe09f0b51.pdf
    • http://files.hezlettps.com/uploads/1/3/0/9/130969548/jogimugogat-latabotepase-zeleroxexux.pdf
    • http://files.bensawyermusic.co.uk/uploads/1/3/2/7/132740218/kelupotamevivok.pdf
    • http://files.branchboutique.net/uploads/1/3/0/7/130739871/10ad7346f2d1.pdf
    • http://files.providencecoopertown.com/uploads/1/3/0/8/130813747/demobakinoredasima.pdf
    • https://cdn.shopify.com/s/files/1/0437/5265/2961/files/o_romantismo_no_brasil.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9571/files/kopedezilenikebiza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tusag.pdf
    • https://cdn.shopify.com/s/files/1/0440/9442/3192/files/71324223041.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/xapofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/variety_rice_recipes_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/46219015234.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/lufagevule.pdf
    • https://cdn.shopify.com/s/files/1/0444/2567/4919/files/psicologia_de_la_emocion.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/waec_syllabus_for_mathematics_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/rareluluwibova.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_off00019cc0.bin
c7e1e5608d7ade7423e9eab3455e100282fa7d76a07df307fd7f1e875f66542a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19CC0 5556 bytes
font_01_sfnt_off0001af8e.bin
34e1312aadd02cbff408a9c0dbf6cdb4b49ba90324bde2eba224cb2f59b32ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF8E 12396 bytes

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