Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b578147bc801895…

MALICIOUS

PDF

53.2 KB Created: 2020-08-08 13:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c5e4f3c313f7da578349f5481a8e884 SHA-1: cccc5afe8a33f08f4b226532dbb8af71115d270b SHA-256: 3b578147bc801895b527c84ae7017652014b5471dba09fefb8bfb1ab40af8db1
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=advanced+bodmas+worksheets+pdf', which is designed to lead users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links, including the malicious redirector, indicates a link farm or redirection attack designed to obscure the final malicious destination.

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=advanced+bodmas+worksheets+pdf
    • http://files.supportlifepdhc.org/uploads/1/3/1/3/131382330/serimoxa_jezakakazobel.pdf
    • http://files.michaelmoreen.com/uploads/1/3/1/4/131453451/naxafokavuwixit_zufelidil.pdf
    • http://files.tribalsoulmaps.com/uploads/1/3/1/8/131856907/e4c79.pdf
    • http://files.caribbeandreamsconcert.com/uploads/1/3/1/6/131607163/timotenofexevalofeg.pdf
    • http://sagux.fustlerthefemalehustler.com/uploads/1/3/1/3/131398140/reminame-xukixisa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/maxozapavosa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9919/2472/files/91118322789.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/tamugesotajinovetakunave.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/kukadonon.pdf
    • https://cdn.shopify.com/s/files/1/0445/4485/2127/files/pdf_to_word_ocr_software_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/36045362865.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/20410582340.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niborenegukudokeregus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/ugc_net_syllabus_for_tourism_administration_and_management.pdf
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/accounting_information_systems_13th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/66169245231.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_off00007be5.bin
e46378070f8ff8453e220c596b2ab24c90386c3ceb8606b303bb96277e3e90f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE5 5448 bytes
font_01_sfnt_off00008e3f.bin
f3db6d354d8eee363da676dba0df10f02fb590bddaa03133e610904ab0c68f40
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3F 14044 bytes
font_02_sfnt_off0000b9f7.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F7 4324 bytes