Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5d0e45318666dd…

MALICIOUS

PDF

63.1 KB Created: 2020-08-14 11:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffdf9ab9fd9a7ad76c1005d4d699e7ff SHA-1: 73fa0bd3a0f807292ca5fd9cf53e6d6167c7db33 SHA-256: dc5d0e45318666ddf080357e14d062ef7981ecc21a9b888fecdf75a907daf22b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=adele+19+songs'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and a reference to Adele's '19 songs', suggesting a lure. The primary attack pattern involves redirecting the user to a malicious site.

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=adele+19+songs
    • http://files.cuddlykoalaspreschool.org/uploads/1/3/0/8/130874667/luvarutogomatenu.pdf
    • http://files.sophieandmi.com/uploads/1/3/1/3/131379510/beloteja.pdf
    • http://files.godworkscf.org/uploads/1/3/1/3/131379832/12035.pdf
    • https://cdn.shopify.com/s/files/1/0430/9457/3205/files/cent_sign_alt_code.pdf
    • https://cdn.shopify.com/s/files/1/0454/1775/8888/files/job_application_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/39875899482.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/37239947696.pdf
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/laborikevawepifovezoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2280/files/8664808998.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/catalysis_mcq.pdf
    • https://cdn.shopify.com/s/files/1/0450/9194/6661/files/download_java_7.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/50353255651.pdf
    • https://cdn.shopify.com/s/files/1/0436/7679/5030/files/xefogimomuduvu.pdf
    • https://cdn.shopify.com/s/files/1/0446/8460/7641/files/42850973056.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5157/files/eyes_copy_and_paste.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_off0000ae8d.bin
9bb7745e4f83a10a299e5f9b024c4f2f5254bc8a7ee4c8fccd56c2f128fa8721		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE8D 3504 bytes
font_01_sfnt_off0000bb0f.bin
8c45bd47e42750c742e8fab819346010f7b0fc203b8d19afac899dfeea98ee11		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB0F 4884 bytes
font_02_sfnt_off0000cbcb.bin
5d58afce78f89d3552951ed3114c1ed8fbf5ab3276e1e104ba0e2a5155170b7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCB 10392 bytes

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