Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1624c75f656d32f…

MALICIOUS

PDF

62.4 KB Created: 2020-07-30 14:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 584526949856ecfe562207d2361f48c9 SHA-1: c29f0fcff9e7943251963d925e37232403579530 SHA-256: c1624c75f656d32fa11a7c9953e2db1faec122a3d4f16cc7bd746533c4e4e99a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to be a lure related to 'Adobe Illustrator CS5 tutorial'. The primary attack pattern involves redirecting the user to malicious infrastructure, likely for phishing or malware delivery. 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.com/pify?keyword=adobe+illustrator+cs5+bangla+tutorial+pdf
    • http://files.artinfluxlondon.com/uploads/1/3/0/7/130738741/1937054.pdf
    • http://files.du.dematic-university.com/uploads/1/3/0/7/130739533/55242e.pdf
    • http://files.poehaku.com/uploads/1/3/1/6/131607239/ab7f23f.pdf
    • http://files.jjsdka.org/uploads/1/3/0/9/130969819/98a098cf.pdf
    • http://files.sweetcelebrationsllc.com/uploads/1/3/1/3/131380063/1772054.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/mizifowubonipu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7827/0619/files/92500588024.pdf
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/zezegasopopisonarabawulaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/85383094483.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/67487119156.pdf
    • https://cdn.shopify.com/s/files/1/0436/7033/9737/files/16958335248.pdf
    • https://cdn.shopify.com/s/files/1/0440/2456/1829/files/51233669951.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0434/4270/0455/files/xililedanepek.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/75796856520.pdf
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/gitavaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/91597741009.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/pafidikowu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/novilixelojujibefeviz.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/
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/zezegasopopisonaraba

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079ff.bin
d323616aaa8620fa1c38465d37f4077ba8fd3eeae355fcaa915a65dea1738bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79FF 5460 bytes
font_01_sfnt_off00008c92.bin
2e918f8f3885dbcd655934202b915cf8c9ba135a7e157ed6594d00c8d303aa65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C92 12200 bytes
font_02_sfnt_off0000b1be.bin
ef0dffd6d9c79a97eb9875e5e7ce63e484e4e608a139d6b3d2df38b92bcde1a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1BE 10336 bytes
font_03_sfnt_off0000d553.bin
17f2bd2ed1a9d619d697ee4ec892290bb48e85248e567f15168a97c46025a52d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD553 6040 bytes

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