Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30fc5bdde76857f…

MALICIOUS

PDF

45.7 KB Created: 2020-07-28 23:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e13feb369668424b8313ab730165fc0 SHA-1: 70702c55f26a7d7ff238050471a3c61a7598339f SHA-256: e30fc5bdde76857f3e1373507a15cdf40b4d9829030b6849c709991496016886
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for phishing or malware distribution. One of these links directs to a known malicious redirector, ttraff.cc, which is designed to obscure the final destination. The document body, though heavily obfuscated, suggests a lure related to 'scientific process worksheet answers', indicating a social engineering attempt to trick users into clicking the malicious links.

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=scientific+process+worksheet+answers
    • http://files.carriedolan.com/uploads/1/3/0/7/130776864/9017134.pdf
    • http://files.eastcoastinferno.com/uploads/1/3/1/6/131636602/e5787da542.pdf
    • http://files.teamnewbalancegvl.com/uploads/1/3/0/7/130775462/7158037.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/63099688983.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/jekim.pdf
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/1271753092.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/10722874783.pdf
    • https://cdn.shopify.com/s/files/1/0436/9966/7099/files/15616355375.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sividejujim.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/19968779519.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/mubekadakixuzokewuxojeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/fisibiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/75587881154.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/8472679102.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/94257642316.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_off00007603.bin
333415cedf96bcdaa81c06dbb6bf00149a8f26850dfc93eff50dc073e6e0bf07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7603 5116 bytes
font_01_sfnt_off00008765.bin
646d01ad288081f853ebcb4cd967cc66f1432e7d427c0cebd7c8125ee94f26ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8765 10096 bytes

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