Malicious PDF — malware analysis report

Static analysis result for SHA-256 347cc1d2e092e880…

MALICIOUS

PDF

44.1 KB Created: 2020-08-23 07:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8374e41495b9a371362aac4eb8461fc3 SHA-1: e4459711d84ec8a9895ea539a34f2785e6645a26 SHA-256: 347cc1d2e092e8802e2b8fef085ca6c598f87dd81bdd22dd56216596124f28c9
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to 'Bluetooth mic volume android'. The presence of numerous other links to Shopify-hosted PDFs suggests a link farm or SEO poisoning tactic to increase visibility.

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=bluetooth+mic+volume+android
    • http://files.mayrosehurst.org/uploads/1/3/1/4/131438188/de69fd610.pdf
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/gupatenumijatopevutefizip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/beers_criteria_ags_2015.pdf
    • https://cdn.shopify.com/s/files/1/0431/1338/2044/files/85474431158.pdf
    • https://cdn.shopify.com/s/files/1/0434/5574/2114/files/jojafebanafabonenixok.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/reference_letter_for_college_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/chloroform_spray_use.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/proteccionismo_y_librecambismo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/kezakobafepifodesibin.pdf
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/medan_magnet_kelas_12.pdf
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/xinowavonizizizubovi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/sazexopab.pdf
    • https://cdn.shopify.com/s/files/1/0449/7742/2494/files/fluke_aircheck_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ef0.bin
a025746d70d28b2830341e00253779dca349d375a7cda998f515f65ff67e1500		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 5112 bytes
font_01_sfnt_off0000802e.bin
372a3f560fc04eeaffe0337526c5da7ae99546e233dd5e7e583337b3f0ce80e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x802E 10476 bytes

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