Malicious PDF — malware analysis report

Static analysis result for SHA-256 8beba610817fe360…

MALICIOUS

PDF

45.9 KB Created: 2020-08-31 21:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06e87c0f75c9e12b26292f8a41c48731 SHA-1: fd3b66a1f26a0acccfc5c2c2a8ac01bd96af0579 SHA-256: 8beba610817fe36025d497b576d21d9efda348a49919c63d731b01f202d575f7
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=hydrochloric+acid+safety+data+sheets, which is likely intended to host malicious content or further redirects. The PDF also contains a large number of embedded links to other PDFs, flagged by PDF_SEO_LINK_FARM, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=hydrochloric+acid+safety+data+sheets
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/pemobezav.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3252/files/40061167508.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/operation_research_assignment_problem.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/bargarh_district_pin_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/majipokizato.pdf
    • https://static.usrfiles.com/ugd/b8c837_020fe300be4e4cbbadafe8ae2b3033d0.pdf
    • https://static.usrfiles.com/ugd/15cd4d_ac01e7956d9c48a9ba8650a079587c2f.pdf
    • https://static.usrfiles.com/ugd/bfbc46_7464759e3345486fa9642de6c19d1a26.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/ademco_6148_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/johnson_control_a419_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdf
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/blues_music_mix.pdf
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/silupitud.pdf
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/bootstrap_4._3._1_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/rirukezosekabigukefub.pdf
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/sorubixok.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_off0000696b.bin
80e191ee634efd9c5d12a3219f7fc410b325d823c67b1accb40296bb26dbd8a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x696B 4856 bytes
font_01_sfnt_off000079fc.bin
74bfd5cc75dfab9a85f0962555cec7ea6613a013182e3902e251c70105eeb8c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x79FC 10136 bytes
font_02_sfnt_off00009caa.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAA 4324 bytes