Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bbe39a7efc29f2…

MALICIOUS

PDF

56.6 KB Created: 2020-08-31 12:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76a1dc9528a696b993cf8045cd945eae SHA-1: 2fec072bf6436be972cd5199412066362cdb3899 SHA-256: 27bbe39a7efc29f279d98a0b30433bfd47401f010b8a42a7000435a7dde697cf
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=risalet%25C3%25BC%2527n+nushiyye+%25C3%25B6zellikleri'. This URL is likely used to redirect the user to a malicious website. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links.

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/wix?keyword=risalet%25C3%25BC%2527n+nushiyye+%25C3%25B6zellikleri
    • https://cdn.shopify.com/s/files/1/0438/4007/7981/files/change_font_size_in.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/78401169418.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/12467698768.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b54dda0625446d084d3c7b31061e438.pdf
    • https://static.usrfiles.com/ugd/c1615c_a4c3a3235c3e40838f21aff7e62cf364.pdf
    • https://static.usrfiles.com/ugd/2c608b_4243cfcb3b8e4906a3beaf4258df12fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_a86d91661e1c4b0799e907e1ff31fb36.pdf
    • https://static.usrfiles.com/ugd/b8c837_f83f012773864f15b88dd7246eeb3c87.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/63217836523.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/simple_wave_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/gentoo_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/wakusajivaxagegepodebugin.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/pujupuzetale.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/22_oxidation-_reduction_reactions_practice_problems_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/68054974869.pdf
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/numixikir.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/brothers_conflict_episode_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/46842192822.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_off00008e84.bin
f50bb6b408192de97543b7d251e6c29ad3e2b140b1b9bbcaacd793db877d9187
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E84 5060 bytes
font_01_sfnt_off00009f82.bin
4c873942f5b42fc41dfcdb73bd9ad3fa4655ef6ff639481e595f8d79026627ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F82 12140 bytes
font_02_sfnt_off0000c4df.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DF 4324 bytes