Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93b7c416e952dfa…

MALICIOUS

PDF

62.7 KB Created: 2020-09-05 09:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de420ed33560425fc2aed812885fd430 SHA-1: 4e8fcfaa1745b23bb77b259fab00f152e39e4c5c SHA-256: a93b7c416e952dfa512d5fdc6b6dc6ec1e2456a5c27e8153a97bb361f105665a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=apache+openoffice+4.+0', which is presented as a download lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, suggesting an attempt to obscure the malicious redirector. No scripts were extracted from this sample.

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.club/wix?keyword=apache+openoffice+4.+0
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/93388989609.pdf
    • https://cdn.shopify.com/s/files/1/0437/0120/7193/files/4866704144.pdf
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/fefazovatuv.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/36068114748.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/18382938159.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/52958747152.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/verutisulazas.pdf
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/addition_with_carry_over_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/pamusujafu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/19865500204.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/ruby_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/pokemon_sky_tower.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/zukit.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/naxujus.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/monster_hunter_world_iceborne.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5976/files/22250314508.pdf
    • https://cdn.shopify.com/s/files/1/0433/0648/3876/files/ballistics_report_definition.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000685c.bin
4aaeb30114d05108cd743bfd6c94d2e18471ffdacf9a9451f0d290d691350f9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x685C 5004 bytes
font_01_sfnt_off000079ff.bin
9cde30d2f8d68049bef7c3240a2072f9747f991f16a8d5b0670d61dbe2b6ae5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79FF 5048 bytes
font_02_sfnt_off00008b39.bin
1620336da6018abf771a3b64a4739dbc5cc5761e5bcfd31f9568e9163b5e6178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B39 2656 bytes
font_03_sfnt_off0000963a.bin
d65353c1e58b8117dba3b6111dc10a97bd845c7ddcedb9792c302b0022a08e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x963A 5032 bytes
font_04_sfnt_off0000a5a4.bin
c8cb303e765c67f43d6d34f29c1d02953890772ff7b697be779fb29335000f72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A4 6640 bytes
font_05_sfnt_off0000b743.bin
c2fba253700e695798022d5d3b72ee38420574d5ec2c67c11c6df72290f9511e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB743 12288 bytes
font_06_sfnt_off0000e083.bin
ab0b30550c16f0218ea180a56450acc25083be48fb805cb0f6f475dfa13b8319		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE083 2832 bytes

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