Malicious PDF — malware analysis report

Static analysis result for SHA-256 a362c5a90de6069b…

MALICIOUS

PDF

38.6 KB Created: 2020-09-01 09:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61284bd99acd02464bd89c26b2e9076a SHA-1: 909704c28eb8ebb7401cab7f8d24ed702aae279c SHA-256: a362c5a90de6069bf1bb46356413be533e6cc3ec39e3f2fae56e64be69cea1db
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF document contains a large number of embedded links, a technique commonly used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the primary links, 'https://ttraff.cc/wix?keyword=journal+citation+report%2528+jcr+2017', is flagged as a malicious redirector. This suggests the document's purpose is to lure users through search results or direct links to malicious sites. No scripts were extracted, and the document body is heavily obfuscated, but the heuristic firings strongly indicate a redirection-based attack.

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/wix?keyword=journal+citation+report%2528+jcr+2017
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/91479798888.pdf
    • https://cdn.shopify.com/s/files/1/0436/8154/6390/files/atheros_ar5bxb63_driver_xp.pdf
    • https://cdn.shopify.com/s/files/1/0447/4611/3173/files/collector_coupled_astable_multivibrator.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/apgli_loan_application_form.pdf
    • https://static.usrfiles.com/ugd/b8c837_791fd0c048c3440aaea525b831fe53db.pdf
    • https://static.usrfiles.com/ugd/b8c837_58cb417fc5a44158927dfaadcf54042e.pdf
    • https://static.usrfiles.com/ugd/b8c837_295d1b478cd3491e9d6f63357d716718.pdf
    • https://static.usrfiles.com/ugd/e3834b_f73f0f0ca54d4eb7b3f55cf4a9928207.pdf
    • https://static.usrfiles.com/ugd/2f7815_0046d40b2d5d4b7db2c3b8f879310a02.pdf
    • https://static.usrfiles.com/ugd/accd1f_a8d2818d8c8642839bd3ebea0247216b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ce0d02bfa7b458f835fcdb7f067e073.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_db6774af00624e41a34254502bb9c3e8.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_off0000586e.bin
de010c2f31bfd74a470266d34d9e72a84130a5daf09b01189f50774f989b4a4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586E 5296 bytes
font_01_sfnt_off00006a9b.bin
17b215366c04b69e3cca23b1631e024d54f2a6de7ff2f3b8327421c40adff5ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9B 10296 bytes

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