Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d57426d685e550…

MALICIOUS

PDF

33.6 KB Created: 2020-08-21 15:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb64fbd2b086304f9e329020f323aaa SHA-1: 50f966a56d4d339a7467ed75b88f3d4805f70188 SHA-256: 24d57426d685e5507cee3ec4bb4e09a5e69ba179a3e25b5c652e02643c0e430e
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the string 'Coupon template word' and the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

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.ru/pify?keyword=coupon+template+word
    • http://files.sstaprek.com/uploads/1/3/2/6/132695576/07073fb389.pdf
    • http://files.kristibridgeman.com/uploads/1/3/1/3/131379183/b9909c.pdf
    • http://files.koepsellsfestivalpopcorn.com/uploads/1/3/0/7/130775109/bubuserinebisetu.pdf
    • http://taxovo.mallincam.net/uploads/1/3/1/3/131398547/gagotefoveva.pdf
    • http://fasasoze.courtneyfiles.com/uploads/1/3/0/7/130776485/guwotixo_gewirasiko_kelawixetur_kaweruzexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/tinumigij.pdf
    • https://cdn.shopify.com/s/files/1/0437/3859/5482/files/xagojoxoparibub.pdf
    • https://cdn.shopify.com/s/files/1/0433/1657/6424/files/vikesano.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/86770226575.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/78130212903.pdf
    • https://cdn.shopify.com/s/files/1/0461/3482/1032/files/alarmy_paid_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/2781/4805/files/spring_boot_devtools.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/botulism_merck_vet_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/kapasonaxigurob.pdf
    • https://cdn.shopify.com/s/files/1/0432/2187/6900/files/lazilawedodozexami.pdf
    • https://cdn.shopify.com/s/files/1/0435/4159/4266/files/si_and_cgs_unit_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0441/1860/5976/files/free_genogram_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/2345/6661/files/43866489022.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_off0000491e.bin
cc86b812918932031cf6b57c5857456579ef7211534cbb0932af53a00bc5a634		 pdf-font-stream PDF embedded font (sfnt) at offset 0x491E 4924 bytes
font_01_sfnt_off000059d2.bin
bc0047b1b9ffc2c70fc2d1aa50907f80fdcc6edb06da88d5d635adc77ec8397a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D2 9324 bytes

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