Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8a86678e9e96d21…

MALICIOUS

PDF

51.5 KB Created: 2020-08-23 02:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec5a7f10777d36b65623ab24847477a3 SHA-1: 7e49162abda22da6f00bb83c3b1e794dfc0fe3af SHA-256: b8a86678e9e96d21b499228b52ffe51aa9cf28f29745c1b37c93cfacad87ef42
130 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=apus+launcher+no+ads', suggesting a lure to download or visit a malicious resource. The presence of a 'download button' heuristic further supports this attack pattern.

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.cc/pify?keyword=apus+launcher+no+ads
    • http://zufovar.qldspruikle.com/uploads/1/3/1/6/131636908/7828572.pdf
    • http://files.justinbernasconi.com/uploads/1/3/1/4/131483267/344953.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/table_tech_money.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/futariwofemubijokiziviku.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/39155185700.pdf
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/10838733148.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/military_alphabet_and_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/73503564287.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/buwuwopoval.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/zimoripajunewurafa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/mastoidite_traitement.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/fokizekepav.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/rozavesisakijedulaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/91574442726.pdf
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/data_entry_resume_sample.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006607.bin
3348a6dd66b1ec1e44e7747f47b1f0d926e3e204e9c09788b68d01adfef5f02e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6607 4632 bytes
font_01_sfnt_off0000763e.bin
451ccbbb35040e09efdb7e068d8e1893c1a2277009efdefb720195d88c9d9368
pdf-font-stream PDF embedded font (sfnt) at offset 0x763E 5152 bytes
font_02_sfnt_off000087ac.bin
dba762a261e6a2c70a4cb7270f2b69701c35f4851876fbd40483efbf18a4f02a
pdf-font-stream PDF embedded font (sfnt) at offset 0x87AC 10588 bytes
font_03_sfnt_off0000abcf.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073
pdf-font-stream PDF embedded font (sfnt) at offset 0xABCF 16092 bytes