Malicious PDF — malware analysis report

Static analysis result for SHA-256 d064f88bdaee87f3…

MALICIOUS

PDF

39.9 KB Created: 2020-09-17 11:39:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8315126911e57eb7af3f67c702c9a222 SHA-1: a6f1e94fe450947beaf6d5a3ce5adc4c23775ef6 SHA-256: d064f88bdaee87f39feb7133f6a4647692f405d62aa7c9ee49170968078e48ce
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.me/wix?keyword=ionic+compounds+polyatomic+ions+answer+key'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to trick the user into visiting this malicious site. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to increase visibility.

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.me/wix?keyword=ionic+compounds+polyatomic+ions+answer+key
    • http://files.bettysmakingmusic.com/uploads/1/3/1/4/131453527/bemeri-rizifojokojo-buzufugalaxep-rejiru.pdf
    • http://posera.mintzathletics.com/uploads/1/3/1/1/131164250/fulavewubowemul.pdf
    • http://pagogiwag.zionweekdayministries.com/uploads/1/3/0/7/130738870/novifaxeten.pdf
    • http://files.run4hope5k.com/uploads/1/3/2/7/132740260/1059141.pdf
    • https://54a5758a-7b12-4af
    • https://df32483e-6a02-4c06-9596-a78c832c04b4.filesusr.com/ugd/6924eb_5ca1b9dc012e40c9badc3d1cfa9b3652.pdf?index=true
    • https://d9cdd732-778e-427f-9cfb-46758ec99a64.filesusr.com/ugd/610d21_4f46ec9454144a0d9e81e5108e9efef9.pdf?index=true
    • https://44dae78d-761a-4bab-8f24-909667fba4c3.filesusr.com/ugd/50988c_ae171a5b232f4d2dabce6019f82a5e8e.pdf?index=true
    • https://2769c9a5-1917-42e7-a111-d2b360526812.filesusr.com/ugd/33ab24_f3b2cab6ebaf4fc1a3743a4d9a6fda1c.pdf?index=true
    • https://86dd128f-f6ab-47ed-aa09-7d774f44843c.filesusr.com/ugd/04c368_833514714b404bbb9814540376f77d13.pdf?index=true
    • https://60a5a54b-7e46-451e-99fc-13bff7cdd5e9.filesusr.com/ugd/cbe7f7_d5b6d1fed6294e33909d10e2932c475f.pdf?index=true
    • https://9b89b04e-ba0a-470e-b9f9-a17f6395afb0.filesusr.com/ugd/96a426_9539b0d2ef1c4875a1f3b29aa95a67e0.pdf?index=true
    • https://43f74327-0658-4bc5-beb3-572002883246.filesusr.com/ugd/79cb75_8d927914cbf349c79d04c4adc6ccb0f1.pdf?index=true
    • https://3b3594f7-ead0-4a5e-a5b9-4dbef6aeb51a.filesusr.com/ugd/cec570_7048b2d297814eefa664169e5f4e385b.pdf?index=true
    • https://ad058ab1-edaf-47b7-8781-b98e9c575b0f.filesusr.com/ugd/b81754_2e665988b0814746accd35c08ee794ee.pdf?index=true
    • https://09c68665-aea1-48b7-b053-415ce804c13c.filesusr.com/ugd/9ff9b8_74492b44cfd049c5b1beea831b143a04.pdf?index=true
    • https://338bbcb5-1588-4ef2-a771-f6559bfefc05.filesusr.com/ugd/73c254_3d8426f1ee5249cfb61125fa60e17495.pdf?index=true
    • https://54a5758a-7b12-4af3-9276-eb918051f2c7.filesusr.com/ugd/66f3f9_5563e29519fe4f1aabf0d4922f09d809.pdf?index=true
    • https://f4b8003f-a3d7-43a0-993c-5cd90949a114.filesusr.com/ugd/92ee2b_ddbb475a4cca43ba9d8ac256affe295a.pdf?index=true
    • 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_off00005c89.bin
e535c15a1317cf086252ba44902b8880719d4d10f13a78b0e6172b41b192ba15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C89 5412 bytes
font_01_sfnt_off00006ef7.bin
4e858d8e02bc4c66de1c8d513f28df23c98c652341ccf42417c47fb3972d6772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF7 10368 bytes

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